The term “pharaoh” was not used for the ruler of Egypt until about 1210 BC. Before the Nineteenth dynasty, “king” was the term most frequently used. And there could be (and were) multiple kings at the same time. Both the Old Testament and the plates of brass seem to use the term Pharaoh as a name or title for the king of Egypt.
More than a king, the Pharaohs were said to be an intermediary between the Egyptian gods and the people. In Mormon Kabbalah, the Pharoah can represent our conscience or worldly thoughts or desires. He is the height of our worldly or physical desires to bestow to gain, the sun that shines light upon Egypt and the Egyptians. If we follow the path of Pharaoh, we will be led down the path of Cain.