differ vs negate

differ and negate both are verbs.

Word	Noun	Adjective	Verb	Adverb
differ	No	No	Yes	No
negate	No	No	Yes	No

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

Other hyponyms of differ include dissent, clash, contradict, contravene.

differ (verb)	negate (verb)
be of different opinions	make ineffective by counterbalancing the effect of
be different	prove negative; show to be false
	deny the truth of
	be in contradiction with