short-change vs scam

short-change is not a noun while scam is a noun.

Word	Noun	Adjective	Verb	Adverb
short-change	No	No	Yes	No
scam	Yes	No	Yes	No

As verbs, scam is a hypernym of short-change; that is, scam is a word with a broader meaning than short-change:

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

As verbs, short-change and scam are synonyms defined as:

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

short-change (noun)	scam (noun)
	a fraudulent business scheme

short-change (verb)	scam (verb)
cheat someone by not returning him enough money	deprive of by deceit
deprive of by deceit