sharper vs card shark

sharper and card shark both are nouns.

Word	Noun	Adjective	Verb	Adverb
sharper	Yes	No	No	No
card shark	Yes	No	No	No

As nouns, sharper and card shark are synonyms defined as:

sharper and card shark: a professional card player who makes a living by cheating at card games

Other synonyms of sharper include card sharp, card sharper, cardsharp, cardsharper, sharpie, sharpy.

sharper (noun)	card shark (noun)
a professional card player who makes a living by cheating at card games	a professional card player who makes a living by cheating at card games