sharper vs defrauder

sharper and defrauder both are nouns.

Word	Noun	Adjective	Verb	Adverb
sharper	Yes	No	No	No
defrauder	Yes	No	No	No

As nouns, defrauder is a hypernym of sharper; that is, defrauder is a word with a broader meaning than sharper:

sharper: a professional card player who makes a living by cheating at card games
defrauder: a person who swindles you by means of deception or fraud

Other hypernyms of sharper include card player, chiseler, chiseller, gouger, grifter, scammer, swindler.

sharper (noun)	defrauder (noun)
a professional card player who makes a living by cheating at card games	a person who swindles you by means of deception or fraud