How to use this glossary
Search the box above if you know the word you are after. Filter by discipline if you want to see everything that belongs to one part of the work. Or read down the A to Z, which is how most people find the term they half-remember from a call.
Every entry follows the same shape: what the term means in one sentence, an everyday comparison, how it works, why it matters, where people get it wrong, and what to do about it. Where a term connects to something I do for clients, the page links to that service rather than selling it in the definition.
Why the definitions read the way they do
Most marketing glossaries define a term using three more terms you also do not know. I have tried not to do that. If a definition here needs another concept, it links to that concept, so you can follow the thread as far as you need and stop when you have your answer.
You will also notice there are no statistics. Benchmarks in this industry are usually borrowed from a study of a different market in a different year, and quoting one at you would be worse than saying nothing. Where a number genuinely depends on your industry, budget or country, the page says so and explains what moves it.
If a term is missing
Send it to me. The list grows from what clients and readers actually ask about, which is a better guide than any keyword tool. The same goes for a definition you think is wrong or out of date: platforms rename things constantly, and a glossary that is not corrected is worse than none.
For longer explanations rather than definitions, the free resources hold the guides and checklists, and the blog covers the things that change often enough to need dating.