seodata.dev

keyword

relativity theory

Monthly search volume and cost-per-click data for "relativity theory" in US.

$ curl "https://app.seodata.dev/v1/search-volume?q=relativity-theory" +--------------+------------------+ | volume | 1,600 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-03-30 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
law of relativity 27,100 $5.39 20/20
theory of relativity 27,100 $9.32 20/20
what is relativity 6,600 $1.6 20/20
what is relativity theory 6,600 $1.6 20/20
what is the theory of relativity 6,600 $1.6 20/20
einstein relativity 4,400 $0.77 20/20
einstein theory of relativity 4,400 $0.95 20/20
einstein's theory of relativity 4,400 $5.97 20/20
theory of relativity einstein 4,400 $0.95 20/20
einstein relativity theory 3,600 $2.64 20/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/search-volume?q=relativity-theory" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt