What is the nominal definition of religion?

The nominal definition of religion is a system of beliefs, practices, rituals, and moral values centered around the worship of a deity or deities, often involving a code of ethics and a sense of community.

A set of beliefs and practices concerning the cause, nature, and purpose of the universe, especially when considered as the creation of a superhuman agency or agencies, usually involving devotional and ritual observances, and often containing a moral code governing the conduct of human affairs.