coextensivity
Coextensivity is a concept in logic and philosophy, particularly in the philosophy of language, that describes a specific relationship between two concepts or predicates. Two concepts or predicates are said to be coextensive if they apply to exactly the same set of entities or individuals. In simpler terms, if every object that has property A also has property B, and every object that has property B also has property A, then A and B are coextensive.
For example, the concepts "creature with a heart" and "creature with kidneys" are often considered coextensive
The concept of coextensivity is important for understanding how language refers to the world and how we