Braunite is a mineral that is primarily composed of manganese oxide. The term is generally used to describe a specific type of mineral that is found in a number of different geological environments, including hydrothermal veins, manganese deposits, and other settings. Some of the most commonly used synonyms for the term "braunite" include "manganite," "manganese ore," and "manganese oxide." Other terms that may be used to describe this mineral include "wad," "psilomelane," and "pyrolusite." Each of these terms refers to a specific type of manganese oxide mineral, and may be used interchangeably with the term "braunite" depending on the context in which it is used.