Is "carwash" a place?
Native speaker’s answer
Rebecca
A "car wash" or "carwash", both spellings are acceptable, is a place where you go to clean the outside and, in some cases, the interior of vehicles. A "carwash" can be self-service (where you wash the car yourself), fully automated (where a machine washes the car) , or full-service with attendants who wash the vehicle. Also note that it may also be used to refer to an event where people pay to have their cars washed by volunteers as a method to raise money for some purpose. Ex: I need to take my car to the carwash. Ex: My brother works at the carwash.