Jezebel as "wife of Ahab who was king of Israel, according to the Old Testament she was a cruel immoral queen who fostered the worship of Baal and tried to kill Elijah and other prophets of Israel (9th century BC)"
Under this definition, jezebel is a noun and has the following properties:
Jezebel as an instance
'Jezebel' can be considered an instance of Jewess, queen.