ice vs icy

ice is a noun but icy is not a noun.

Word	Noun	Adjective	Verb	Adverb
ice	Yes	No	Yes	No
icy	No	Yes	No	No

ice (noun)	icy (noun)
a rink with a floor of ice for ice hockey or ice skating
an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant
a frozen dessert with fruit flavoring (especially one containing no milk)
a flavored sugar topping used to coat and decorate cakes
the frozen part of a body of water
diamonds
water frozen in the solid state

ice (adjective)	icy (adjective)
	extremely cold
	devoid of warmth and cordiality; expressive of unfriendliness or disdain
	covered with or containing or consisting of ice
	shiny and slick as with a thin coating of ice