The term 'Part of a Service' can be described by four different crossword solutions: SERMON (6 letters), Teacup (6 letters), Teapot (6 letters), and PLATE (5 letters). A SERMON is a religious speech or lecture given by a clergyman, usually in a church. A teacup is a small cup used for drinking tea. A teapot is a pot with a lid and spout used for brewing and serving tea. Lastly, a PLATE is a shallow dish used for serving food. All of these items are typically used in a formal service setting.