percussion section vs rhythm section

percussion section and rhythm section both are nouns.

Word	Noun	Adjective	Verb	Adverb
percussion section	Yes	No	No	No
rhythm section	Yes	No	No	No

As nouns, percussion section and rhythm section are synonyms defined as:

percussion section and rhythm section: the section of a band or orchestra that plays percussion instruments

Other synonyms of percussion section include percussion.

percussion section (noun)	rhythm section (noun)
the section of a band or orchestra that plays percussion instruments	the section of a band or orchestra that plays percussion instruments