Diffuser is a term that refers to a device or object that scatters or diffuses light or sound waves in different directions. There are numerous synonyms for the word diffusor, including disperser, spreader, emitter, radiator, and broadcaster. Each term connotes a different method of diffusion and may be used interchangeably depending on the context. For example, a speaker system might use an emitter or a broadcaster to distribute sound waves throughout a room, while a light fixtures might employ a disperser or a spreader to soften or spread the light. Ultimately, the choice of synonym will depend on the specific requirements of the application, as well as the preferences of the speaker or writer.