When we talk about "film sets", we usually refer to the physical locations where movies are shot. However, there are several other synonyms that can be used interchangeably. "Production sets" are a commonly used synonym that refers to the same thing. Another option could be "movie sets", which may be more specific to the film industry. "Stage sets" can also be used, although this is more commonly associated with theater productions. "Soundstages" is another term that is often used to describe the indoor spaces where movies are shot. Ultimately, the term used depends on the context and individuals involved in the production process.