dissentient vs dissent

dissentient is not a noun while dissent is a noun.

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

dissentient (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

dissentient (adjective)	dissent (adjective)
disagreeing, especially with a majority
(of Catholics) refusing to attend services of the Church of England

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