chilly vs unfriendly

chilly is a noun but unfriendly is not a noun.

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

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

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