The syllables 'nushi' (owner, master) and 'ushi' (adult) are appended to the names of high level kami, as in the cases of Oohirumenomuchi (an alternative name for Amaterasu), Okuni nushi, and so on.
「ヌシ」（主）「ウシ」（大人）は位の高い神につけられる（オオヒルメノムチ（アマテラスの別名）、大国主など。