frigidness vs frigidity

frigidness and frigidity both are nouns.

Word	Noun	Adjective	Verb	Adverb
frigidness	Yes	No	No	No
frigidity	Yes	No	No	No

As nouns, frigidness and frigidity are synonyms defined as:

Other synonyms of frigidness include chilliness, coldness, coolness, iciness.

As nouns, frigidness and frigidity are synonyms defined as:

frigidness and frigidity: sexual unresponsiveness (especially of women) and inability to achieve orgasm during intercourse

As nouns, frigidness and frigidity are synonyms defined as:

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

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