Is "pig" the name of a single animal, or does it include all animals whose consumption is forbidden, such as donkeys, and what is the ruling on eating a crocodile?

The pig is the well-known detestable animal, and its name is not applied to the donkey or other animals, neither linguistically nor Islamically. Eating crocodile is considered unlawful according to the more preponderant opinion, which is that of the majority of scholars.