unfriendly vs friendly

unfriendly is not a noun while friendly is a noun.

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

unfriendly (noun)	friendly (noun)
	troops belonging to or allied with your own military forces

unfriendly (adjective)	friendly (adjective)
not disposed to friendship or friendliness	characteristic of or befitting a friend
not easy to understand or use	of or belonging to your own country's forces or those of an ally
very unfavorable to life or growth	easy to understand or use
not friendly	inclined to help or support; not antagonistic or hostile