inquire vs question

inquire is not a noun while question is a noun.

Word	Noun	Adjective	Verb	Adverb
inquire	No	No	Yes	No
question	Yes	No	Yes	No

As verbs, question is a hypernym of inquire; that is, question is a word with a broader meaning than inquire:

Other hypernyms of inquire include query.

As verbs, question is a hyponym of inquire; that is, question is a word with a more specific, narrower meaning than inquire:

Other hyponyms of inquire include pry, query, interrogate, confer with, consult.

inquire (noun)	question (noun)
	uncertainty about the truth or factuality or existence of something
	an instance of questioning
	the subject matter at issue
	a formal proposal for action made to a deliberative assembly for discussion and vote
	a sentence of inquiry that asks for a reply
	an informal reference to a marriage proposal

inquire (verb)	question (verb)
have a wish or desire to know something	pose a question
address a question to and expect an answer from	challenge the accuracy, probity, or propriety of
conduct an inquiry or investigation of	place in doubt or express doubtful speculation
	pose a series of questions to
	conduct an interview in television, newspaper, and radio reporting