blarney vs persuade

blarney is a noun but persuade is not a noun.

Word	Noun	Adjective	Verb	Adverb
blarney	Yes	No	Yes	No
persuade	No	No	Yes	No

As verbs, persuade is a hypernym of blarney; that is, persuade is a word with a broader meaning than blarney:

blarney: influence or urge by gentle urging, caressing, or flattering
persuade: cause somebody to adopt a certain position, belief, or course of action; twist somebody's arm

blarney (noun)	persuade (noun)
flattery designed to gain favor

blarney (verb)	persuade (verb)
influence or urge by gentle urging, caressing, or flattering	cause somebody to adopt a certain position, belief, or course of action; twist somebody's arm
	win approval or support for