A rest area is a location on a highway or roadway where travelers can stop and take a break from driving. However, there are several different terms that can be used to describe a rest area. Some synonyms for rest area include service area, truck stop, lay-by, rest stop, and picnic area. A service area typically refers to a larger rest area with additional amenities such as restaurants, gas stations, and convenience stores. A truck stop is a rest area specifically designed for commercial vehicles. A lay-by is a small rest area that is primarily used for parking. Meanwhile, a rest stop and picnic area offer a place to relax and enjoy a meal but may not have as many amenities as a service area.