Marketing has a language problem. The industry is full of acronyms and buzzwords, and some of that is genuine shorthand professionals use to move quickly. But a fair bit of it gets used to make simple things sound complicated, which is handy if you’re trying to look clever or justify an invoice.
You shouldn’t need a translator to understand what you’re paying for. So here are the terms you’ll actually run into, in plain English.
The ones about getting seen
Impressions is just how many times your ad was shown. Not clicked, not read, simply displayed on a screen. It tells you about visibility, nothing more.
Reach is how many different people saw it. The difference matters: one person shown your ad ten times is ten impressions but a reach of one. High impressions with low reach means you’re showing the same people the same ad over and over.
CTR, or click-through rate, is the percentage of people who saw your ad and actually clicked it. It’s a quick read on whether the ad is interesting enough to act on. A low number usually means the ad or the offer isn’t landing.
The ones about money
This is the group worth understanding properly, because it’s your money they describe.
CPC (cost per click) is what you pay each time someone clicks. CPM (cost per thousand impressions) is what you pay for every thousand times your ad is shown, and it’s more about awareness than action. CPA (cost per acquisition) is the important one: what it costs you to win an actual customer or lead. You can have a cheap cost per click and still an expensive cost per customer if those clicks don’t convert, which is exactly why the cheap-looking option isn’t always the good one.
ROI (return on investment) is the whole point. Put simply, for every dollar you spend, how much comes back? If you can’t answer that, you don’t yet know whether your advertising is working, no matter how healthy the other numbers look.
The ones about who sees your ad
Targeting is choosing who your ad is shown to, by location, age, interests, or behaviour. It’s how you avoid paying to reach people who’ll never buy.
Audience is the group you’re aiming at. Retargeting (or remarketing) is showing ads to people who’ve already visited your website or interacted with you. That’s why a product you looked at once seems to follow you around the internet. It’s not magic or surveillance gone rogue, it’s just an ad shown to someone who already raised their hand.
The ones about what happens next
Conversion is the moment someone does the thing you wanted: buys, enquires, books, signs up. It’s the outcome that actually matters, as opposed to the clicks and views leading up to it.
Landing page is the page someone arrives at after clicking your ad. Send people to a good, relevant one and they convert. Send them to your generic homepage and a lot of them get lost. Funnel is just the journey from first noticing you to becoming a customer, described as a shape because plenty of people enter the top and only some reach the bottom.
Why this matters beyond sounding smart
Understanding these terms isn’t about being able to talk the talk at a networking event. It’s about not being baffled by your own marketing.
When you know what the words mean, you can read your own reports, ask sharper questions, and spot when someone’s using jargon to dress up thin results. A report full of impressive impressions means very little if the cost per customer is quietly terrible. You can only catch that if the language isn’t a fog. Anyone genuinely working in your interest will happily explain what they mean. Being fluent just means you’ll know whether their explanation holds up.
The takeaway
Marketing jargon mostly describes simple ideas: who saw your ad, who clicked, what it cost, and what you got back. Strip away the acronyms and it’s just the plain questions any business owner would ask. Don’t let the vocabulary talk you out of understanding where your money goes.
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