seodata.dev

keyword

heart is what system

Monthly search volume and cost-per-click data for "heart is what system" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=heart+is+what+system&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-16 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
cardiovascular system and circulatory system 74,000 $0.44 18/20
function of the circulatory system 9,900 $0 19/20
circulatory system heart 3,600 $0.34 20/20
heart and circulatory 3,600 $0.05 20/20
blood circulation in heart 3,600 $0.05 19/20
organ in the circulatory system 2,900 $0 20/20
heart and circulatory system 1,900 $0.44 20/20
heart circulatory system 1,900 $0.44 20/20
how does the cardiovascular system work 1,900 $0 20/20
heart system 1,000 $3.94 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/keyword?q=heart+is+what+system&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt