polytheism is the belief in more than one god, on the other hand monotheism is the belief of only one god.
*Monotheism preaches a firm and unchanging dualism in matters of morality. Thus, there is good and evil, heaven and hell, etc. based on moral absolutism.
*Polytheism acknowledges the obvious distinction between the good and the bad. But instead of preaching it, polytheists follow the customs of their ancestors, which are based on moral relativism.