opposition vs antipodal

opposition and antipodal both are nouns.

Word	Noun	Adjective	Verb	Adverb
opposition	Yes	No	No	No
antipodal	Yes	Yes	No	No

As nouns, antipodal is a hyponym of opposition; that is, antipodal is a word with a more specific, narrower meaning than opposition:

opposition (noun)	antipodal (noun)
the act of hostile groups opposing each other	the relation of opposition along a diameter
the action of opposing something that you disapprove or disagree with
a body of people united in opposing something
an armed adversary (especially a member of an opposing military force)
a contestant that you are matched against
a direction opposite to another
the relation between opposed entities

opposition (adjective)	antipodal (adjective)
	relating to the antipodes or situated at opposite sides of the earth