opposition vs oppose

opposition is a noun but oppose is not a noun.

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

opposition (noun)	oppose (noun)
the act of hostile groups opposing each other
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 (verb)	oppose (verb)
	be resistant to
	be against; express opposition to
	set into opposition or rivalry
	fight against or resist strongly
	act against or in opposition to
	contrast with equal weight or force