The term "Anabaptist Denomination" is used to refer to a group of Christian churches that believe in adult baptism by immersion. However, there are several synonyms for this term, including "Believer's Church," "Brethren," "Free Church," and "Radical Reformation." Each of these terms carries its own connotations and nuances, but they all generally refer to churches that have broken away from the mainstream Protestant or Catholic churches in order to form their own distinct communities. One key characteristic of Anabaptist denominations is their commitment to separation of church and state, and their emphasis on the importance of individual faith and conscience.