loup-garou vs wolfman

loup-garou and wolfman both are nouns.

Word	Noun	Adjective	Verb	Adverb
loup-garou	Yes	No	No	No
wolfman	Yes	No	No	No

As nouns, loup-garou and wolfman are synonyms defined as:

loup-garou and wolfman: a monster able to change appearance from human to wolf and back again

Other synonyms of loup-garou include lycanthrope, werewolf.

loup-garou (noun)	wolfman (noun)
a monster able to change appearance from human to wolf and back again	a monster able to change appearance from human to wolf and back again