tensity vs tautness

tensity and tautness both are nouns.

Word	Noun	Adjective	Verb	Adverb
tensity	Yes	No	No	No
tautness	Yes	No	No	No

As nouns, tensity and tautness are synonyms defined as:

tensity and tautness: the physical condition of being stretched or strained

Other synonyms of tensity include tenseness, tension.

tensity (noun)	tautness (noun)
the physical condition of being stretched or strained	lack of movement or room for movement
	the physical condition of being stretched or strained