assent vs concession

assent and concession both are nouns.

Word	Noun	Adjective	Verb	Adverb
assent	Yes	No	Yes	No
concession	Yes	No	No	No

As nouns, concession is a hyponym of assent; that is, concession is a word with a more specific, narrower meaning than assent:

Other hyponyms of assent include acceptance, conceding, yielding.

assent (noun)	concession (noun)
agreement with a statement or proposal to do something	a contract granting the right to operate a subsidiary business
	a point conceded or yielded
	the act of conceding or yielding

assent (verb)	concession (verb)
to agree or express agreement