Opposite
Part of speech: adjective
Definition: located directly across from something else, or from each other facing in the other direction of either of two complementary or mutually exclusive things
Part of speech: adverb
Definition: in an opposite position
Part of speech: preposition
Definition: facing, or across from in a complementary role to
Part of speech: noun
Definition: something opposite or contrary to another an opponent an antonym an additive inverse
Example sentence: The opposite of courage in our society is not cowardice, it is conformity.
Opponent
Part of speech: noun
Definition: An individual or group who is a rival of another.One who attempts to stop the progression of.One who objects to.In team sports, a player of an opposite team.
Example sentence: Most of the arguments to which I am party fall somewhat short of being impressive, owing to the fact that neither I nor my opponent knows what we are talking about.