chilliness vs coolness

chilliness and coolness both are nouns.

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

As nouns, chilliness and coolness are synonyms defined as:

Other synonyms of chilliness include nip.

As nouns, chilliness and coolness are synonyms defined as:

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

chilliness (noun)	coolness (noun)
the property of being moderately cold	the property of being moderately cold
a lack of affection or enthusiasm	a lack of affection or enthusiasm
	fearless self-possession in the face of danger
	calm and unruffled self-assurance