question vs contemplate

question is a noun but contemplate is not a noun.

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

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

Other hypernyms of question include chew over, excogitate, meditate, mull, mull over, muse, ponder, reflect, ruminate, speculate, think over.

question (noun)	contemplate (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

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