differ vs dissent

differ is not a noun while dissent is a noun.

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

As verbs, differ and dissent are synonyms defined as:

Other synonyms of differ include disagree, take issue.

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

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

differ (noun)	dissent (noun)
	the act of protesting; a public (often organized) manifestation of dissent
	(law) the difference of one judge's opinion from that of the majority
	a difference of opinion

differ (verb)	dissent (verb)
be of different opinions	withhold assent
be different	be of different opinions
	express opposition through action or words