oppose vs dissent

oppose is not a noun while dissent is a noun.

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

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

Other hyponyms of oppose include blackball, negative, veto, protest, resist.

oppose (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

oppose (verb)	dissent (verb)
be resistant to	withhold assent
be against; express opposition to	be of different opinions
set into opposition or rivalry	express opposition through action or words
fight against or resist strongly
act against or in opposition to
contrast with equal weight or force