reassert vs uphold

reassert and uphold both are verbs.

Word	Noun	Adjective	Verb	Adverb
reassert	No	No	Yes	No
uphold	No	No	Yes	No

As verbs, uphold is a hyponym of reassert; that is, uphold is a word with a more specific, narrower meaning than reassert:

Other hyponyms of reassert include maintain, verify, corroborate, validate, reconfirm.

reassert (verb)	uphold (verb)
strengthen or make more firm	stand up for; stick up for; of causes, principles, or ideals
	support against an opponent
	keep or maintain in unaltered condition; cause to remain or last