unfriendly vs chilly

unfriendly is not a noun while chilly is a noun.

Word	Noun	Adjective	Verb	Adverb
unfriendly	No	Yes	No	No
chilly	Yes	Yes	No	No

unfriendly (noun)	chilly (noun)
	very hot and finely tapering pepper of special pungency

unfriendly (adjective)	chilly (adjective)
not disposed to friendship or friendliness	appreciably or disagreeably cold
not easy to understand or use	not characterized by emotion
very unfavorable to life or growth	lacking warmth of feeling
not friendly