A more thorough explanation:

Definition: Denomination refers to the act of naming or giving a collective designation, especially in the context of a religious sect.

• The Catholic Church is a denomination of Christianity.
• There are many different denominations of Islam, including Sunni and Shia.
• Protestantism is a denomination that emerged from the Reformation in the 16th century.

These examples illustrate how the term "denomination" is used to describe different groups within a larger religious tradition. Each denomination has its own beliefs, practices, and organizational structure, but they all share a common heritage and set of core beliefs.