inquiry vs means test

inquiry and means test both are nouns.

Word	Noun	Adjective	Verb	Adverb
inquiry	Yes	No	No	No
means test	Yes	No	No	No

As nouns, means test is a hyponym of inquiry; that is, means test is a word with a more specific, narrower meaning than inquiry:

inquiry: a systematic investigation of a matter of public interest
means test: an inquiry into the financial position of someone applying for financial aid

Other hyponyms of inquiry include inquest.

inquiry (noun)	means test (noun)
a systematic investigation of a matter of public interest	an inquiry into the financial position of someone applying for financial aid
a search for knowledge
an instance of questioning