dissentient vs recusant

dissentient is not a noun while recusant is a noun.

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

As adjectives, dissentient and recusant are synonyms defined as:

dissentient and recusant: (of Catholics) refusing to attend services of the Church of England

dissentient (noun)	recusant (noun)
	someone who refuses to conform to established standards of conduct

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