keyword

best book of vocabulary

Monthly search volume and cost-per-click data for "best book of vocabulary" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=best+book+of+vocabulary&country=us" +--------------+------------------+ | volume | 590 | | cpc | $0.78 | | competition | 0.61 | | country | US | | updated | 2026-06-24 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
books vocabulary	5,400	$0.64	14/20
vocabulary books	4,400	$0.62	16/20
vocabulary books english	1,300	$0.54	17/20
vocabulary book best	590	$0.78	14/20
good vocabulary books	480	$0.7	13/20
best book for vocab	480	$0.41	12/20
books to learn vocabulary	40	$0.5	13/20
best vocabulary book english	40	$0.18	12/20
english vocabulary best book	40	$0.18	12/20
good book for english vocabulary	40	$0.18	12/20

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://api.seodata.dev/v1/keyword?q=best+book+of+vocabulary&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