drumming vs percussion

drumming and percussion both are nouns.

Word	Noun	Adjective	Verb	Adverb
drumming	Yes	No	No	No
percussion	Yes	No	No	No

As nouns, percussion is a hypernym of drumming; that is, percussion is a word with a broader meaning than drumming:

drumming (noun)	percussion (noun)
the act of playing drums	the act of exploding a percussion cap
	the act of playing a percussion instrument
	tapping a part of the body for diagnostic purposes
	the section of a band or orchestra that plays percussion instruments