The term "roman collar" refers to a style of clerical collar often worn by Catholic priests. However, there are several synonyms for this term that may be used interchangeably. Some of these synonyms include "dog collar," "clerical collar," "priest collar," and "tab collar". The use of these synonyms often depends on regional or religious traditions. While the Roman Catholic Church predominantly uses the term "roman collar," Anglican and Orthodox churches may use terms such as "dog collar" or "clerical collar." Regardless of the specific terminology used, these collars remain a significant symbol of the religious authority and dress code of religious leaders.