keyword

9th article of the constitution

Monthly search volume and cost-per-click data for "9th article of the constitution" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=9th+article+of+the+constitution&country=us" +--------------+------------------+ | volume | 480 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-23 | +--------------+------------------+

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
9 amendment	40,500	$1.16	12/20
ninth amendment	9,900	$3.14	11/20
9th amendment simplified	6,600	$5.98	14/20
what is the 9th amendment	6,600	$1.67	11/20
amendment 9	3,600	$4.15	14/20
9th amendment definition	1,900	$8	12/20
example of the 9th amendment	1,900	$0	11/20
what does the 9th amendment mean	1,900	$0	11/20
9th amendment examples	1,600	$0	12/20
ninth amendment simplified	1,000	$1.89	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=9th+article+of+the+constitution&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