polar vs pivotal

polar and pivotal both are adjectives.

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

As adjectives, polar and pivotal are synonyms defined as:

polar (adjective)	pivotal (adjective)
of or existing at or near a geographical pole or within the Arctic or Antarctic Circles	being of crucial importance
located at or near or coming from the earth's poles
having a pair of equal and opposite charges
extremely cold
being of crucial importance
characterized by opposite extremes; completely opposed