torpidness vs torpidity

torpidness and torpidity both are nouns.

Word	Noun	Adjective	Verb	Adverb
torpidness	Yes	No	No	No
torpidity	Yes	No	No	No

As nouns, torpidness and torpidity are synonyms defined as:

torpidness and torpidity: inactivity resulting from lethargy and lack of vigor or energy

Other synonyms of torpidness include listlessness, torpor.

torpidness (noun)	torpidity (noun)
inactivity resulting from lethargy and lack of vigor or energy	inactivity resulting from lethargy and lack of vigor or energy
	a state of motor and mental inactivity with a partial suspension of sensibility