short-change vs mulct

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

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

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

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

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

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

short-change (noun)	mulct (noun)
	money extracted as a penalty

short-change (verb)	mulct (verb)
cheat someone by not returning him enough money	impose a fine on
deprive of by deceit	deprive of by deceit