pleximetry vs percussion

pleximetry and percussion both are nouns.

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

As nouns, pleximetry and percussion are synonyms defined as:

pleximetry and percussion: tapping a part of the body for diagnostic purposes

pleximetry (noun)	percussion (noun)
tapping a part of the body for diagnostic purposes	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