con artist vs swindler

con artist and swindler both are nouns.

Word	Noun	Adjective	Verb	Adverb
con artist	Yes	No	No	No
swindler	Yes	No	No	No

As nouns, swindler is a hypernym of con artist; that is, swindler is a word with a broader meaning than con artist:

Other hypernyms of con artist include chiseler, chiseller, defrauder, gouger, grifter, scammer.

con artist (noun)	swindler (noun)
a swindler who exploits the confidence of his victim	a person who swindles you by means of deception or fraud