General terms:
* Antonym: This is the most common term for words with opposite meanings.
* Opposite: A more general term, but can sometimes be ambiguous.
* Contradictory: Emphasizes the clashing or conflicting nature of the meanings.
* Inverse: Implies a direct reversal or a reciprocal relationship between the meanings.
More specific terms:
* Antithesis: This term is used for a more formal or literary contrast, often used in rhetoric and writing.
* Paradox: Describes a statement that seems contradictory yet may be true.
Example:
* Hot and Cold are antonyms.
* Up and Down are opposites.
* Liberal and Conservative are contradictory political ideologies.
* Supply and Demand are inverse economic concepts.
Ultimately, the best word to use depends on the specific context and the nuance you want to express.