percussor vs plexor

percussor and plexor both are nouns.

Word	Noun	Adjective	Verb	Adverb
percussor	Yes	No	No	No
plexor	Yes	No	No	No

As nouns, percussor and plexor are synonyms defined as:

percussor and plexor: (medicine) a small hammer with a rubber head used in percussive examinations of the chest and in testing reflexes

Other synonyms of percussor include plessor.

percussor (noun)	plexor (noun)
(medicine) a small hammer with a rubber head used in percussive examinations of the chest and in testing reflexes	(medicine) a small hammer with a rubber head used in percussive examinations of the chest and in testing reflexes