Theism is the belief in some kind of god or gods, while atheism is the lack of belief in a god or gods. Among theists, monotheism is the belief in a single god, like, Judaism, Christianity, and Islam. While polytheism is the belief in multiple gods, like, Shintoism, Thelema, Wicca, druidism, Taoism, Asatru, and Candomble. Take into consideration that henotheism is a belief in multiple gods, though one is more important than the others. Like Hinduism.  Modern faiths include a variety of monotheistic, polytheistic, and atheistic beliefs.