The word "contrary" is an adjective and a noun in English, and it means something that is opposite or in conflict with something else.
In a more complex context, "contrary" can be used in logical discussions. For instance, in philosophy or logic, two statements can be described as contrary if they cannot both be true at the same time but can both be false. For example, "It is raining" and "It is not raining" are contrary propositions.
"Contrary" is a versatile word that describes opposition or conflict. It can be used in everyday conversation as well as in more advanced discussions about logic and philosophy.