marriage proposal vs offer

marriage proposal and offer both are nouns.

Word	Noun	Adjective	Verb	Adverb
marriage proposal	Yes	No	No	No
offer	Yes	No	Yes	No

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

Other hypernyms of marriage proposal include offering.

marriage proposal (noun)	offer (noun)
an offer of marriage	a usually brief attempt
	something offered (as a proposal or bid)
	the verbal act of offering

marriage proposal (verb)	offer (verb)
	put forward for consideration
	threaten to do something
	ask (someone) to marry you
	produce or introduce on the stage
	present for acceptance or rejection
	propose a payment
	give something useful or necessary to
	make available for sale
	offer verbally
	make available; provide
	agree freely
	mount or put up
	present as an act of worship