What Are SEO Keywords? A No-Fluff Guide

SEO keywords are words and phrases people type into search engines to find content, products, or answers. Every search query is a keyword. Your job: match the words you publish to the words people actually search.

Why Keywords Matter

Search engines rank pages for queries, not websites. No keyword match, no ranking.

Keywords also reveal intent. “Buy running shoes” signals purchase intent. “Best running shoes for flat feet” signals research intent. Same topic, different stage, different content.

Types Of SEO Keywords

Short-tail keywords One or two words. Example: “shoes.” High volume. High competition. Vague intent.

Long-tail keywords Three or more words. Example: “best running shoes for flat feet 2026.” Lower volume. Lower competition. Sharp intent. These convert better because the searcher already knows what they want.

Informational keywords Searches for answers. “What are SEO keywords” is one. No purchase intent yet.

Navigational keywords Searches for a specific brand or site. “Nike running shoes website.”

Transactional keywords Searches ready to buy. “Buy Nike Air Zoom online.”

Commercial investigation keywords Searches comparing options before buying. “Nike vs Adidas running shoes.”

LSI keywords Terms search engines associate with your main keyword. For “running shoes,” that’s “cushioning,” “arch support,” “marathon training.” They add context. They don’t replace your main keyword.

How To Find SEO Keywords

1. Write down 5-10 broad seed terms related to your topic.
2. Run them through a keyword tool — Google Keyword Planner, Ahrefs, SEMrush, or Ubersuggest. Each pulls search volume, competition, and related terms.
3. Google the keyword yourself. Check the top 10 results. Match your content to what’s already ranking.
4. Mine the “People Also Ask” box. It hands you real questions people search. Turn them into subheadings.
5. Check which keywords competitor pages rank for, using a tool like Ahrefs. Target the gaps.

Where To Place Keywords

Placement matters more than repetition.

• Title tag — primary keyword near the front.
• H1 — match the title tag or use a close variant.
• First 100 words — mention the keyword early; search engines weight early content higher.
• Subheadings — use variants and related questions.
• URL slug — short, keyword-included, no stop words.
• Meta description — not a ranking factor, but it drives clicks. Include the keyword anyway.
• Image alt text — describe the image; add the keyword only if it fits naturally.

Common Keyword Mistakes

Keyword stuffing. Cramming a keyword into every sentence. Google penalizes it. Readers leave because of it.

Ignoring intent. Ranking a transactional page for an informational keyword wastes the click. The visitor wanted an answer, not a sales pitch.

Chasing volume only. A keyword with 50,000 searches and brutal competition won’t move a new site. A keyword with 200 searches and weak competition will.

Skipping research. Writing on instinct guesses at the searcher’s language. Research replaces the guess with data.

SEO Keywords And AEO

AI answer engines — ChatGPT, Perplexity, Google AI Overviews — pull direct answers from web content. They favor pages that state the answer in the first sentence, structure content with clear headers, and answer follow-up questions directly.

Keyword strategy for AEO works the same way as traditional SEO, with one shift: write for the question, not just the term. “What are SEO keywords” gets answered better by a page that opens with a one-line definition than one that opens with a story.