percussion vs auscultation

percussion and auscultation both are nouns.

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

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

percussion: tapping a part of the body for diagnostic purposes
auscultation: listening to sounds within the body (usually with a stethoscope)

percussion (noun)	auscultation (noun)
the act of exploding a percussion cap	listening to sounds within the body (usually with a stethoscope)
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