proposal vs propose

proposal is a noun but propose is not a noun.

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

proposal (noun)	propose (noun)
something proposed (such as a plan or assumption)
the act of making a proposal
an offer of marriage

proposal (verb)	propose (verb)
	present for consideration, examination, criticism, etc.
	propose or intend
	make a proposal, declare a plan for something
	ask (someone) to marry you
	put forward; nominate for appointment to an office or for an honor or position