Biblical prophecy (n.) is a type of its own; omens, dreams and shamans' trances deliver the supernatural by an entirely different road.
False prophecy (n.) was, for Jeremiah, sincere error: mistaking one's dream for God's word.
Mari prophecy (n.) served the god's own interests; Israel's prophets spoke for God but for the people's good.
Professional prophecy (n.) decayed in the age of the great prophets into flattering kings and selling visions of its own devising.