low temperature vs frigidness

low temperature and frigidness both are nouns.

Word	Noun	Adjective	Verb	Adverb
low temperature	Yes	No	No	No
frigidness	Yes	No	No	No

As nouns, low temperature and frigidness are synonyms defined as:

Other synonyms of low temperature include cold, coldness, frigidity.

low temperature (noun)	frigidness (noun)
the absence of heat	a lack of affection or enthusiasm
	sexual unresponsiveness (especially of women) and inability to achieve orgasm during intercourse
	the absence of heat