keyword

18

Monthly search volume and cost-per-click data for "18" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=18&country=us" +--------------+------------------+ | volume | 201,000 | | cpc | $1.47 | | competition | 0.02 | | country | US | | updated | 2026-05-25 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
one direction 18 lyrics	2,900	$0	10/20
one direction lyrics 18	2,900	$0	10/20
one direction 18	2,400	$0	19/20
18 one direction	2,400	$0	18/20
18 one direction song	2,400	$0	12/20
one direction 18 song	2,400	$0	12/20
18 by 1d	2,400	$0	11/20
one direction song 18	2,400	$0	11/20
18 1d	2,400	$0	10/20
the 18 song	30	$0	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://app.seodata.dev/v1/keyword?q=18&country=us" 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