muscleman vs muscle-builder

muscleman and muscle-builder both are nouns.

Word	Noun	Adjective	Verb	Adverb
muscleman	Yes	No	No	No
muscle-builder	Yes	No	No	No

As nouns, muscleman and muscle-builder are synonyms defined as:

muscleman and muscle-builder: someone who does special exercises to develop a brawny musculature

Other synonyms of muscleman include bodybuilder, muscle builder, musclebuilder.

muscleman (noun)	muscle-builder (noun)
a bully employed as a thug or bodyguard	someone who does special exercises to develop a brawny musculature
someone who does special exercises to develop a brawny musculature