hypertonia vs hypertonicity

hypertonia and hypertonicity both are nouns.

Word	Noun	Adjective	Verb	Adverb
hypertonia	Yes	No	No	No
hypertonicity	Yes	No	No	No

As nouns, hypertonia and hypertonicity are synonyms defined as:

hypertonia and hypertonicity: (of muscular tissue) the state of being hypertonic

Other synonyms of hypertonia include hypertonus.

hypertonia (noun)	hypertonicity (noun)
(of muscular tissue) the state of being hypertonic	(of muscular tissue) the state of being hypertonic
	(of a solution) the extent to which a solution has a higher osmotic pressure than some other