scam vs swindle

scam and swindle both are nouns.

Word	Noun	Adjective	Verb	Adverb
scam	Yes	No	Yes	No
swindle	Yes	No	Yes	No

As nouns, swindle is a hypernym of scam; that is, swindle is a word with a broader meaning than scam:

Other hypernyms of scam include cheat, fraud, rig.

As verbs, scam and swindle are synonyms defined as:

Other synonyms of scam include bunco, con, defraud, diddle, goldbrick, hornswoggle, mulct, nobble, rook, short-change, victimize.

scam (noun)	swindle (noun)
a fraudulent business scheme	the act of swindling by some fraudulent scheme

scam (verb)	swindle (verb)
deprive of by deceit	deprive of by deceit