company (business enterprise)

parts, often used in the names of machine part factories

(fashion, jewelry) gold / (color) gold

gauge

gate (door-like structure outside) / boarding gate / (electronics, electrical engineering, computing) gate (part of a transistor, logical pathway, electrical circuit)

call, the act of calling out / phone call

coal

A transliteration of the English surname Cole

A transliteration of the German surname Kohl

mystery (something secret or unexplainable) / mystery (genre)