anaerobic exercise vs musclebuilding

anaerobic exercise and musclebuilding both are nouns.

Word	Noun	Adjective	Verb	Adverb
anaerobic exercise	Yes	No	No	No
musclebuilding	Yes	No	No	No

As nouns, anaerobic exercise and musclebuilding are synonyms defined as:

anaerobic exercise and musclebuilding: exercise that builds muscles through tension

Other synonyms of anaerobic exercise include bodybuilding, muscle building.

anaerobic exercise (noun)	musclebuilding (noun)
exercise that builds muscles through tension	exercise that builds muscles through tension