Final answer:
Religion is a system of beliefs and practices that connects humans to the supernatural and provides a basis for individual and group identities. Communitas is a theory that emphasizes individuals' obligations to their communities.
Step-by-step explanation:
Religion is a system of beliefs, values, and practices concerning what a person holds sacred or considers to be spiritually significant. It connects humans to the supernatural and is generally practiced in a group setting. Religion provides adherents with a basis for individual and group identities and informs their thoughts and actions on a wide range of issues.
Communitas is a theory about human identity that holds that people's values and worldviews are contingent on their social environment. It emphasizes the importance of individuals' obligations to their communities, which may supersede their individual interests.