hatchet man vs enforcer

hatchet man and enforcer both are nouns.

Word	Noun	Adjective	Verb	Adverb
hatchet man	Yes	No	No	No
enforcer	Yes	No	No	No

As nouns, hatchet man and enforcer are synonyms defined as:

hatchet man and enforcer: one whose job it is to execute unpleasant tasks for a superior

hatchet man (noun)	enforcer (noun)
one whose job it is to execute unpleasant tasks for a superior	one whose job it is to execute unpleasant tasks for a superior
a professional killer