question vs proposal

question and proposal both are nouns.

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

As nouns, proposal is a hypernym of question; that is, proposal is a word with a broader meaning than question:

question: a formal proposal for action made to a deliberative assembly for discussion and vote
proposal: something proposed (such as a plan or assumption)

As nouns, proposal is a hypernym of question; that is, proposal is a word with a broader meaning than question:

Other hypernyms of question include marriage offer, marriage proposal, proposal of marriage.

question (noun)	proposal (noun)
uncertainty about the truth or factuality or existence of something	something proposed (such as a plan or assumption)
an instance of questioning	the act of making a proposal
the subject matter at issue	an offer of marriage
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)	proposal (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