Seed Keyword

Definition

A seed keyword is a broad, core keyword that serves as the starting point of the keyword research process. Just as plants grow from a seed in agriculture, dozens to hundreds of related keywords grow from a seed keyword.

Seed keywords themselves typically have very high search volume and high competition, making them difficult to rank for directly. Their role is to set the direction for exploration—not to serve as direct targeting targets.

Summary

Criteria for selecting seed keywords: ① Does it express the core topic of the business? ② Is it not too broad? (e.g., "marketing" is too broad) ③ Is it not too narrow? (e.g., "B2B SaaS content marketing Korean guide" is too narrow). Good seeds are 2–3 word topical keywords at the level of "SEO," "content marketing," or "email marketing."

The Role of Seed Keywords

Setting Keyword Research Direction

When you enter a seed keyword into keyword tools (Ahrefs, Semrush), they suggest hundreds of related keywords. If the seed is set incorrectly, results will drift away from the keyword direction you want.

Defining Topic Clusters

Seed keywords define the core topics (Pillars) where a site builds authority. The target keyword for a Pillar page is often similar to or directly connected to the seed keyword.

Understanding the Competitive Landscape

Analyzing the SERP for a seed keyword reveals what types of content rank at the top and who the main competitors are.

5 Methods for Discovering Seed Keywords

Method 1: List Core Business Services/Products

Start from the question: "What problem does our business solve?"

Example: For an SEO tools company

SEO
keyword research
backlink analysis
site audit

Method 2: Use Your Target Customer's Language

Think about the terms customers use when searching for your product or service. Customer language—not jargon—becomes the seed.

Example: "search optimization" (technical term) vs. "how to increase blog visitors" (customer language)

Method 3: Competitor Analysis

Analyze competitors' main topics, categories, and primary keywords to derive seeds. Check top keywords for competitor domains in Ahrefs.

Method 4: Explore Google Autocomplete

Enter seed candidates into Google and review autocomplete suggestions. Topics with many suggested keywords signal sufficient search demand.

Method 5: Analyze Internal Search Logs

If your site has a search function, the words visitors actually search for are the best source of seed keywords.

Criteria for Good Seed Keywords

Appropriate Breadth

Too broad a seed → expands in irrelevant directions

❌ Too broad: "marketing", "business", "online"
✅ Appropriate: "SEO", "email marketing", "social media marketing"

Too narrow a seed → no expandable keywords

❌ Too narrow: "technical SEO for Korean B2B SaaS startups"
✅ Appropriate: "technical SEO", "B2B SEO"

Business Relevance

Seed keywords must connect to business goals. Choosing seeds with high search volume but no business relevance leads to content with traffic but no conversions.

Search Demand Exists

When you search a seed keyword on Google, abundant results and rich autocomplete suggest sufficient search demand.

From Seed Keyword to Long-Tail: The Expansion Process

Seed keyword: "SEO"
    ↓ Ahrefs keyword expansion
Related keyword list:
- SEO tools (high volume, high KD)
- SEO strategy (medium)
- what is SEO (medium)
- SEO for beginners (medium)
- technical SEO checklist (low volume, low KD)
- how to optimize blog SEO (low volume, low KD) ← long-tail
- SEO backlink building beginner guide (very low volume) ← long-tail

See the Long-Tail Keywords entry for details.

Seed Keywords and Keyword Clustering

Grouping keywords derived from a single seed by search intent completes your content plan.

Example: Seed "content marketing"

Pillar: "What is content marketing?" (informational)
Cluster 1: "How to build a content marketing strategy" (how-to)
Cluster 2: "Blog content marketing" (specific method)
Cluster 3: "Measuring content marketing ROI" (analytical)
Cluster 4: "Content marketing tool recommendations" (comparative)

See the Keyword Clustering entry for details.

Application in the Korean Market

Characteristics of Korean Seed Keywords

Korean produces different results than English when you set seed keywords in Korean. Korean users employ both English terms (SEO) and Korean translations (e.g., search optimization), so separate expansion work is needed for both English and Korean seeds.

Example:

English seed: "SEO" → keyword research, backlinks, technical SEO...
Korean seed: "SEO" (English is also used in Korea), "search optimization" (Korean equivalent) → keyword research, backlinks, technical SEO...

Naver vs. Google Seed Keyword Differences

If targeting Naver, use Naver Search Ads' keyword tool to check Korean search volume. The same keyword can have different search volume on Google and Naver, so prioritize seed keywords based on your primary traffic source.

Frequently Asked Questions

Q. How many seed keywords is appropriate?
A. It depends on the number of core topics in your business. Small niche sites typically start with 5–10 seed keywords; large content sites start with 20–30. Too many seeds reduce focus and make it harder to build topical authority.

Q. Shouldn't I target seed keywords directly?
A. Seed keywords have high KD, making them difficult for new sites to rank for directly. However, sites with sufficient domain authority can use seed keywords as the primary keyword for Pillar pages. There is no rule that seeds cannot be targeted directly—it depends on your site's current situation.

Q. Do seed keywords have to be in English?
A. No. For Korean sites, Korean seed keywords are natural. However, English keywords (SEO, AEO, CRM) are also heavily searched in Korea, so English seeds should be used in parallel.

Q. What happens if I choose seed keywords incorrectly?
A. Wrong seeds lead to content with low business relevance. Traffic may come but without conversions, or you may miss important topics and fall behind competitors. Seed keywords can be reviewed regularly and updated when business strategy changes.

Q. What if a competitor already dominates a specific seed keyword?
A. Two strategies exist. ① Target the same seed but compete long-term with deeper, better content than competitors. ② Find adjacent seed keywords where competitors are less focused and target niches. For new sites, ② is more realistic. See the Keyword Gap Analysis entry for details.

Related Sources

Ahrefs (2024). What Are Seed Keywords? (And How to Find Them). Ahrefs Blog.
Semrush (2024). Seed Keywords: The Foundation of Any Keyword Research. Semrush Blog.
Moz (2024). Keyword Research. Moz Beginner's Guide to SEO.