marriage proposal vs offering

marriage proposal and offering both are nouns.

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

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

Other hypernyms of marriage proposal include offer.

marriage proposal (noun)	offering (noun)
an offer of marriage	the act of contributing to the funds of a church or charity
	something offered (as a proposal or bid)
	the verbal act of offering
	money contributed to a religious organization; item or items contributed to a religious organization for religious purposes