torpor vs torpidness

torpor and torpidness both are nouns.

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

As nouns, torpor and torpidness are synonyms defined as:

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

Other synonyms of torpor include listlessness, torpidity.

torpor (noun)	torpidness (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