inquiring vs question

inquiring and question both are nouns.

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

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

Other hyponyms of inquiring include challenge, enquiry, inquiry, interrogation, query, examination, interrogation, interrogatory.

inquiring (noun)	question (noun)
a request for information	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

inquiring (adjective)	question (adjective)
given to inquiry

inquiring (verb)	question (verb)
	pose a question
	challenge the accuracy, probity, or propriety of
	place in doubt or express doubtful speculation
	pose a series of questions to
	conduct an interview in television, newspaper, and radio reporting