polar vs glacial

polar and glacial both are adjectives.

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

As adjectives, polar and glacial are synonyms defined as:

Other synonyms of polar include arctic, frigid, gelid, icy.

polar (adjective)	glacial (adjective)
of or existing at or near a geographical pole or within the Arctic or Antarctic Circles	relating to or derived from a glacier
located at or near or coming from the earth's poles	extremely cold
having a pair of equal and opposite charges	devoid of warmth and cordiality; expressive of unfriendliness or disdain
extremely cold
being of crucial importance
characterized by opposite extremes; completely opposed