seodata.dev

keyword

21 month old vocabulary

Monthly search volume and cost-per-click data for "21 month old vocabulary" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=21+month+old+vocabulary&country=us" +--------------+------------------+ | volume | 90 | | cpc | $0.01 | | competition | 0.06 | | 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
how many words should a 21 month old say 480 $0.02 14/20
how many words should 21 month old say 480 $0.02 13/20
how many words should a 21 month-old say 480 $0.02 11/20
how many words should a 21-month old say 480 $0.02 11/20
how many words should a 21.month old say 480 $0.02 11/20
how many words at 21 months 90 $2.52 12/20
how many words should my 21 month old say 90 $0.02 12/20
how many words should my 21 month-old say 90 $0.02 12/20
how many words by 21 months 70 $0 14/20
how many words should a 21 month say 20 $0 13/20

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=21+month+old+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