keyword

best books on english vocabulary

Monthly search volume and cost-per-click data for "best books on english vocabulary" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=best+books+on+english+vocabulary&country=us" +--------------+------------------+ | volume | 40 | | cpc | $0.18 | | competition | 0.5 | | country | US | | updated | 2026-06-22 | +--------------+------------------+

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
vocabulary books	4,400	$0.62	14/20
vocabulary books english	1,300	$0.54	12/20
vocabulary books for adults	140	$0.95	12/20
best book english vocabulary	40	$0.18	17/20
good book for english vocabulary	40	$0.18	17/20
best vocabulary book english	40	$0.18	16/20
best books for vocabulary in english	40	$0.18	12/20
english vocabulary best book	40	$0.18	12/20
best vocabulary books english	30	$0.05	17/20
good english vocabulary books	30	$0.05	15/20

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+books+on+english+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