Keywords, explained
What keywords are, why they matter for SEO, and the difference between short-tail and long-tail keywords.
You've probably heard the word "keywords" when people talk about SEO. But what does it actually mean, and why does it matter for your website?
This guide explains keywords in plain terms — no jargon, no guesswork.
Quick summary
Keywords are the words and phrases people type into Google when they're searching. Your job in SEO is to understand which keywords your potential customers use, and make sure your website clearly answers those searches. You don't need to stuff keywords into your text — you need to write genuinely helpful content about the right topics.
What is a keyword?
A keyword is any word or phrase someone types into a search engine. It could be:
- A single word: "plumber"
- A short phrase: "emergency plumber"
- A full question: "how much does an emergency plumber cost in Chicago"
Every time someone searches, they're using keywords. Your website ranks for keywords — meaning Google decides which of your pages are relevant to which searches, and shows them (or doesn't) accordingly.
Short-tail vs long-tail keywords
Keywords are often described as short-tail or long-tail:
| Type | Example | Monthly searches | Competition |
|---|---|---|---|
| Short-tail | "shoes" | Millions | Very high |
| Mid-tail | "running shoes" | Hundreds of thousands | High |
| Long-tail | "best running shoes for flat feet women" | Thousands | Lower |
Short-tail keywords are broad. They get enormous search volume, but they're also fiercely competitive. A small business trying to rank for "shoes" is competing against Nike, Amazon, and thousands of others.
Long-tail keywords are more specific. They get fewer searches, but those searches are more targeted — people searching specific phrases are usually closer to making a decision. Long-tail keywords are much more achievable for most businesses.
Where to focus
For most small and medium businesses, long-tail keywords are where the real opportunity lies. A well-written page targeting a specific, relevant phrase can rank well even against larger competitors.
Search intent: what does the searcher actually want?
Every keyword has an intent — the reason behind the search. Understanding intent is just as important as knowing the keyword itself.
The four main types of search intent are:
- Informational: "how does SEO work" — the person wants to learn something
- Navigational: "Facebook login" — they want to go to a specific site
- Commercial: "best accounting software for small business" — they're researching before buying
- Transactional: "buy QuickBooks online" — they're ready to purchase
When you write a page, you need to match the intent. If someone searches "how to care for orchids," they want an informative how-to guide — not a page trying to sell them fertilizer.
How keywords relate to your website
Every page on your website can target a keyword or a small cluster of related keywords. For example:
- Your homepage might target your business name and your core service
- A service page might target "wedding photography Chicago"
- A blog post might target "what to wear for engagement photos"
The goal is not to squeeze keywords into your writing unnaturally. It's to write content that genuinely covers the topic those keywords represent. Google is very good at understanding context — stuffing keywords into text no longer works and can actually hurt you.
Common questions
Related guides
- Keyword research basics
- On-page SEO explained
- Writing SEO-friendly content
- Page titles & meta descriptions
- SEO terms, explained simply
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