Glossary
Social media glossary
Every corner of social media has its own vocabulary - and most of it is never actually explained. This is the plain-English glossary: 50+ of the terms creators, marketers and brands use every day in 2026, each defined without jargon so you always know exactly what people mean.
Whether you're reading a growth thread, briefing a creator, or buying your first promotion, the language of social media trips people up constantly. We grouped the most important terms into five clear themes - metrics, growth & discovery, content, creators & monetization, and buying engagement - so you can skim to the area you need. Each entry is one or two sentences, written the way we'd explain it to a friend.
The algorithm
The set of ranking and recommendation systems a platform uses to decide which content to show each person, and in what order. There isn't one "algorithm" - feed, Reels, Stories and search each have their own - but they all reward content that earns fast engagement, watch time, saves and shares. For the deep dive, read our Instagram algorithm explained guide.
A — MetricsPerformance metrics
These are the numbers in your insights dashboard - what they measure and which ones actually predict growth versus which ones are just vanity.
Engagement rate
The share of viewers who interact with a post (likes, comments, saves, shares) relative to reach or followers. The clearest single measure of how well content resonates.
Reach
The number of unique accounts that saw your content at least once. Growth-focused creators watch reach far more closely than follower count.
Impressions
The total number of times your content was displayed, counting repeat views by the same person. Always equal to or higher than reach.
Saves
When someone bookmarks your post to return to later. One of the strongest "this is valuable" signals, and a reliable predictor of expanded reach.
Shares
When a viewer sends your content to someone else or reposts it. A powerful signal because it spreads your post to brand-new audiences for free.
Watch time
The total or average time people spend watching a video. High watch time tells the algorithm your content holds attention and deserves wider distribution.
Completion rate
The percentage of viewers who watch a video all the way to the end. Especially important for short Reels and TikToks, where finishing - and looping - boosts reach.
CPM
Cost per mille - the price an advertiser pays per 1,000 impressions. The standard way of pricing both paid ads and sponsored creator posts.
CTA
Call to action - the explicit instruction you give viewers, such as "follow for more," "save this," or "link in bio." Content with a clear CTA converts far better.
Vanity metrics
Numbers that look impressive but don't drive results - typically raw likes and follower counts. Useful for social proof, weak as a measure of real performance.
Conversion
When a viewer takes the action you wanted - following, clicking, signing up or buying. The bottom-line metric that ties social activity to actual outcomes.
Follows per reach
Of the non-followers a post reached, how many actually followed you. A direct read on whether your content and profile convert strangers into followers.
Engagement rate is the one metric worth obsessing over. Our Instagram engagement rate guide shows how to calculate it, what counts as "good" at your size, and how to lift it.
B — GrowthGrowth & discovery
The mechanisms that get your content in front of people who don't follow you yet - the engine behind every account that grows fast.
FYP
The For You Page - TikTok's main feed of recommended videos from accounts you don't follow. The platform's biggest discovery surface and the goal of most TikTok creators.
Explore page
Instagram's equivalent of the FYP - a personalised grid of recommended posts and Reels from accounts you don't follow, found under the magnifying-glass tab.
Organic reach
The audience you reach without paying to promote a post - earned purely through the algorithm and shares. The opposite of paid reach.
Virality
When a single piece of content spreads far beyond your usual audience through shares and algorithmic recommendation. Often unpredictable, but engineered by maximising saves and shares.
Shadowban
The common term for a sudden, unexplained collapse in reach where your content stops being recommended. Rarely confirmed by platforms; usually caused by content variance or guideline breaches.
Hashtag
A keyword prefixed with # that helps platforms categorise your post by topic. A minor discovery signal in 2026 - a few precise tags help, but they no longer drive reach on their own.
Trending sound
An audio clip many creators are using at once. Posting with a rising trending sound can earn extra reach because the platform actively surfaces fresh takes on it.
Social proof
The psychological effect where people trust and follow accounts that already look popular. Healthy follower and engagement counts make new visitors more likely to convert.
Verified badge
The checkmark next to an account name confirming its authenticity - or, on some platforms, a paid subscription. A strong trust and credibility signal for visitors.
Engagement window
The first hour or so after posting, when early reactions tell the algorithm whether to test your content with a wider audience. The highest-leverage period for any post.
Loop
When a short video restarts and viewers keep watching, inflating watch time. Designing Reels to loop seamlessly is a classic trick for boosting completion-driven reach.
SEO (social)
Optimising captions, on-screen text and profiles with searchable keywords so your content surfaces in in-app search - increasingly important as users search platforms like Google.
Before you blame a shadowban, check your last few posts: most reach drops are normal content variance, not a penalty. Real suppression usually follows a guideline breach or a sudden change in niche.
C — ContentContent & formats
The building blocks of what you actually post - the formats, structures and craft terms that show up in every content brief.
Reels
Instagram's short-form vertical video format, shown to non-followers by default. The platform's primary discovery engine and the best tool for fast growth.
Carousel
A multi-image or multi-slide post users swipe through. Great for tutorials and lists because swiping boosts time-on-post and saves.
Story
A full-screen photo or video that disappears after 24 hours. Used for daily, casual updates and direct connection with existing followers rather than discovery.
Highlight
A saved collection of past Stories pinned to your profile. Acts like permanent tabs - results, FAQs, products - that help new visitors decide to follow.
Hook
The opening line and first frame of a piece of content, designed to stop the scroll in the first three seconds. The single highest-leverage part of any post.
Niche
The specific topic and audience an account focuses on. A tight niche helps the algorithm categorise you and signals new visitors exactly what they'll get by following.
UGC
User-generated content - photos, videos or reviews made by customers or creators rather than a brand's in-house team. Valued because it feels authentic and converts well.
Evergreen content
Content that stays relevant and keeps earning reach long after posting, unlike timely or trend-based content. The foundation of a library that works while you sleep.
Caption
The text accompanying a post. A strong caption adds context, keywords for search, and a clear call to action that nudges comments, saves and follows.
Engagement bait
Content that artificially begs for interaction ("comment YES!", "tag a friend"). Platforms now detect and quietly down-rank it, so it tends to backfire.
Batching
Producing several pieces of content in one focused session, then scheduling them out. The most reliable way to stay consistent without burning out.
Repurposing
Reshaping one piece of content into multiple formats or platforms - turning a Reel into a carousel, a YouTube clip into a TikTok. Multiplies output from a single idea.
D — CreatorsCreators & monetization
The terms that govern how creators are categorised, paid and partnered with - essential whether you're a creator or a brand briefing one.
Influencer
Someone with an engaged audience who can sway their followers' opinions or purchases. Brands pay influencers to promote products to that built-in, trusting audience.
Nano-influencer
A creator with roughly 1,000-10,000 followers. Small but highly engaged and trusted, making them cost-effective for niche, authentic brand partnerships.
Micro-influencer
A creator with about 10,000-100,000 followers. The sweet spot for many brands - meaningful reach combined with engagement rates larger accounts can't match.
Macro-influencer
A creator with roughly 100,000-1M+ followers. Big reach and broad awareness, but usually lower engagement rates and higher fees than smaller tiers.
Affiliate
A partnership where a creator earns a commission on sales made through their unique link or code. Performance-based income that scales with how well content converts.
Brand deal
A paid agreement where a creator produces content promoting a company's product or service. The core income stream for most professional creators.
Collab
A co-created or co-published post between two accounts, shared to both audiences at once. A fast way to reach a relevant audience you don't already have.
Creator fund
A platform program that pays creators based on the views or engagement their content earns. Income tied directly to performance, with rates that vary by platform.
Media kit
A short document a creator shares with brands summarising audience, reach, engagement and rates. The pitch deck that turns an audience into paid partnerships.
Whitelisting
When a creator grants a brand permission to run paid ads from the creator's own handle. Combines authentic creator voice with the brand's ad budget and targeting.
Gifting
When a brand sends free products to a creator hoping for organic coverage, with no guaranteed post. A low-cost entry point to influencer marketing.
Rate card
A creator's published pricing for different deliverables - a Reel, a Story, a carousel. Sets clear expectations and speeds up brand negotiations.
E — BuyingBuying engagement
The vocabulary around buying followers, likes and views - so you can tell quality from junk and shop safely. The difference between these terms is the difference between a smart boost and a wasted purchase.
Real followers
Followers from genuine, active accounts run by real people. They add lasting social proof and won't vanish or trigger platform clean-ups - the only kind worth buying.
Bot followers
Fake, automated accounts with no real activity. They inflate your count briefly but get purged by platforms, tank your engagement rate, and damage credibility. Avoid them.
Refill
A guarantee that any followers who drop off within a set window are automatically replaced for free. A sign of a reputable provider standing behind delivery quality.
Drip-feed
Delivering purchased followers or likes gradually over time instead of all at once, so growth looks natural rather than a suspicious overnight spike.
Drop-off
When some purchased followers disappear after delivery, usually low-quality accounts being removed. A good refill policy covers this; heavy drop-off signals poor quality.
High-quality (HQ)
Industry shorthand for followers from believable profiles with photos and activity, as opposed to empty bot accounts. Always worth the small premium over "cheap" options.
Free trial
A small batch of followers or likes offered at no cost so you can test a provider's quality and speed before paying. The safest way to vet a service.
Delivery speed
How quickly an order arrives. Instant delivery is convenient, but a paced, natural-looking rollout is safer for the appearance of organic growth.
No-password (safe)
A service that only needs your public @username, never your login. The non-negotiable safety standard - never share your password to buy engagement.
If you decide to boost, stick to real, high-quality followers with a refill guarantee and no password required. Start with a batch of free Instagram followers to test quality, then explore buying Instagram followers proportional to your size.
F — QuestionsFrequently asked
What is a good engagement rate?
It depends on platform and size, but a useful rule of thumb is 1-3% on Instagram feed posts and higher on Reels and TikTok. Smaller accounts often see higher rates because their audience is closer-knit. Compare yourself to accounts your own size, not celebrities - and see our engagement rate guide for the maths.
What is the FYP?
FYP stands for For You Page - TikTok's main feed of algorithmically recommended videos from accounts you don't follow. It's the biggest discovery surface on the platform, and landing on it is how creators reach far beyond their existing followers.
What is a shadowban?
It's the common term for a sudden, unexplained drop in reach where your content stops being recommended without any notice. Platforms rarely confirm it - most reach drops are actually content variance, an uncategorisable topic, or a guideline breach. Read more in our algorithm guide.
What is UGC?
UGC stands for User-Generated Content - photos, videos or reviews created by real customers or creators rather than a brand's in-house team. Brands use it because it feels authentic and converts better than polished ads, and many creators now produce UGC as a paid service.
What's the difference between reach and impressions?
Reach is the number of unique people who saw your content; impressions is the total times it was displayed, including repeat views. If 100 people each see a post twice, that's 100 reach and 200 impressions.
Sources & further reading
- Instagram Help Center — definitions of reach, impressions and insights metrics.
- TikTok Help Center — "How the For You feed works."
- Adam Mosseri / Instagram — public statements on Reels reach, saves and shares.
- Blastup growth experiments — internal data on engagement signals and follower quality, 2024–2026.
- Related: Instagram engagement rate, Instagram algorithm explained, and all Blastup guides.
Put the vocabulary to work
Now you know the terms - turn them into growth. Add real social proof to your account, starting with a free batch, no password required.
Want to apply these ideas? Read how the Instagram algorithm works, master your engagement rate, or browse all Blastup guides.