muscleman vs rowdy

muscleman and rowdy both are nouns.

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

As nouns, rowdy is a hypernym of muscleman; that is, rowdy is a word with a broader meaning than muscleman:

Other hypernyms of muscleman include bully, hooligan, roughneck, ruffian, tough, yob, yobbo, yobo.

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

muscleman (adjective)	rowdy (adjective)
	disturbing the public peace; loud and rough