Most religions whorship a deity or a group of deities. Christianity worships Christ, Islam worships Allah, and Ancient Nordic Religion worshipped gods such as Odin or Thor.
Religions have associated rituals. Christianity has mass, Islam has prayer at the mosque, and Ancient Nordic Religion has animal sacrifice or blot.
Religions work as social systems. Religions not only help determine personal identities but also social identities.
Religions and politics have historically been close, because of the influence of religion in society.