The terms "Catholic" and "Christian" are often used interchangeably, but they refer to different aspects of faith within Christianity. While all Catholics are Christians, not all Christians are Catholics.

This article explores the key differences between Catholicism and other Christian denominations, focusing on beliefs, practices, authority, and traditions. Understanding these distinctions helps clarify the unique identity of Catholicism within the broader Christian faith, while also highlighting the common beliefs that unite all Christians.