contemplate vs question

contemplate is not a noun while question is a noun.

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

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

Other hyponyms of contemplate include premeditate, theologise, theologize, introspect, bethink, cogitate, wonder, puzzle, consider, study.

contemplate (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

contemplate (verb)	question (verb)
think intently and at length, as for spiritual purposes	pose a question
reflect deeply on a subject	challenge the accuracy, probity, or propriety of
consider as a possibility	place in doubt or express doubtful speculation
look at thoughtfully; observe deep in thought	pose a series of questions to
	conduct an interview in television, newspaper, and radio reporting