According to this thesis, various Buddha, which are the original figures of Deities, are called 'Honjibutsu' (Honji Buddha) and deities originating from Honjibutsu are called 'Suijakushin' (Suijaku deity).
この場合、神の本体である仏のことを「本地仏」と言い、本地仏が神の姿で現われたものを「垂迹神」と言う。