frigidness vs low temperature

frigidness and low temperature both are nouns.

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

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

Other synonyms of frigidness include cold, coldness, frigidity.

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