cold vs icy

cold is a noun but icy is not a noun.

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

cold (noun)	icy (noun)
the absence of heat
the sensation produced by low temperatures
a mild viral infection involving the nose and respiratory passages (but not the lungs)

cold (adjective)	icy (adjective)
having a low or inadequate temperature or feeling a sensation of coldness or having been made cold by e.g. ice or refrigeration	extremely cold
extended meanings; especially of psychological coldness; without human warmth or emotion	devoid of warmth and cordiality; expressive of unfriendliness or disdain
(color) giving no sensation of warmth	covered with or containing or consisting of ice
lacking the warmth of life	shiny and slick as with a thin coating of ice
of a seeker; far from the object sought
without compunction or human feeling
so intense as to be almost uncontrollable
marked by errorless familiarity
having lost freshness through passage of time
unconscious from a blow or shock or intoxication
feeling or showing no enthusiasm
sexually unresponsive
lacking originality or spontaneity; no longer new