fitness vs physical fitness

fitness and physical fitness both are nouns.

Word	Noun	Adjective	Verb	Adverb
fitness	Yes	No	No	No
physical fitness	Yes	No	No	No

As nouns, fitness and physical fitness are synonyms defined as:

fitness and physical fitness: good physical condition; being in shape or in condition

fitness (noun)	physical fitness (noun)
the quality of being suitable	good physical condition; being in shape or in condition
the quality of being qualified
good physical condition; being in shape or in condition