The semantic core is a complete, structured list of all relevant keywords for your site's niche. Not just a keyword list — each keyword carries metadata, a group, a target page, and an intent.
vs a keyword list
A keyword list is just a list. A semantic core is structure with volume, KD, intent, the assigned page, and priority.
Why you need it
1. Foundation of content strategy. 2. Protection against cannibalization. 3. Gap analysis.
Build steps
1. Core topics. 2. Keyword research per topic. 3. Grouping. 4. Search intent. 5. Map to pages.
Grouping
Topic cluster: pillar + clusters. Each cluster is one page.
Tools
Ahrefs Keyword Explorer, Semrush Keyword Magic, Yandex Wordstat, Google Keyword Planner.
The document
Google Sheets. Columns: keyword, volume, KD, intent, topic, priority, page, status.
Size
Small niche: 50-200. Medium: 500-1000. Large: 5000-50000.
Intent groups
Informational, Navigational, Commercial, Transactional.
Competitor analysis
Top 5 competitors in Ahrefs. Content gap.
Long-tail focus
Lower competition, realistic ranking.
Updates
Audit 2-4 times a year.
AI and the semantic core
ChatGPT and Claude help, but a human owns the final strategy.
Sayt.uz
1200+ keywords, 6 themes, 100-300 clusters each. Google Sheets with metadata. Audit twice a year.