An exonym is a name of a person, a people group, language, or place used by people of other places and languages. An endonym is a name that people of a certain place and language call themselves. For example, the endonym of Germany is "Deutschland", because that is what Germans call their country, and Germans call themselves and their language "Deutsch". On the other hand, Germany and German are its exonym because English speakers, who are not German, use those names to to describe it.