What term describes a subgroup within a larger religious group?

The term that describes a subgroup within a larger religious group is "Denomination." A denomination is a specific religious group that has distinct beliefs, practices, or doctrines that set it apart from other groups within the broader religion. For example, in Christianity, there are numerous denominations such as Catholicism, Protestantism, and Orthodoxy, each with its unique characteristics yet all falling under the larger umbrella of Christianity.

While "faction" can refer to a group within a larger organization that is often characterized by dissent or disagreement, it doesn’t specifically denote a religious context or imply an established subgroup with recognized beliefs. "Convocation" generally refers to a gathering or assembly, often for academic or clerical purposes, rather than a distinct subgroup within a religion. "Association" typically denotes a group formed for a shared purpose or common interest, but this term is broader and doesn't specifically indicate a subgroup within a religious context. Therefore, "Denomination" is the most accurate term for a subgroup within a larger religious group.