iciness vs chilliness

iciness and chilliness both are nouns.

Word	Noun	Adjective	Verb	Adverb
iciness	Yes	No	No	No
chilliness	Yes	No	No	No

As nouns, iciness and chilliness are synonyms defined as:

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

iciness (noun)	chilliness (noun)
coldness due to a cold environment	the property of being moderately cold
a lack of affection or enthusiasm	a lack of affection or enthusiasm