muscle-builder vs bodybuilder

muscle-builder and bodybuilder both are nouns.

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

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

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

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

muscle-builder (noun)	bodybuilder (noun)
someone who does special exercises to develop a brawny musculature	someone who does special exercises to develop a brawny musculature