polar vs cold

polar is not a noun while cold is a noun.

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

polar (noun)	cold (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)

polar (adjective)	cold (adjective)
of or existing at or near a geographical pole or within the Arctic or Antarctic Circles	having a low or inadequate temperature or feeling a sensation of coldness or having been made cold by e.g. ice or refrigeration
located at or near or coming from the earth's poles	extended meanings; especially of psychological coldness; without human warmth or emotion
having a pair of equal and opposite charges	(color) giving no sensation of warmth
extremely cold	lacking the warmth of life
being of crucial importance	of a seeker; far from the object sought
characterized by opposite extremes; completely opposed	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