hooligan vs muscleman

hooligan and muscleman both are nouns.

Word	Noun	Adjective	Verb	Adverb
hooligan	Yes	No	No	No
muscleman	Yes	No	No	No

As nouns, muscleman is a hyponym of hooligan; that is, muscleman is a word with a more specific, narrower meaning than hooligan:

Other hyponyms of hooligan include bullyboy, muscle, skin, skinhead, plug-ugly, tough guy.

hooligan (noun)	muscleman (noun)
a cruel and brutal fellow	a bully employed as a thug or bodyguard
	someone who does special exercises to develop a brawny musculature