Fach

noun
  1. A German term used in opera to categorize singers based on the range, weight, and color of their voices, as well as the roles they are best suited to perform. noun
    The soprano was classified in the lyric fach due to her vocal qualities.
    Understanding one's fach is essential for opera singers to choose roles that fit their voice.
  2. In a broader sense, it can refer to a category or classification within a particular field or discipline. noun
    In academia, each subject can be considered a different fach.
    He specialized in the technical fach of engineering.