"Rep show" refers to a representation or demonstration of an object or idea. Synonyms for "rep show" could include performance, exhibition, display, presentation, or showcase. Each of these words highlights a different aspect of the demonstration - a performance suggests a theatrical or artistic expression, while an exhibition suggests a display of items or artwork. A presentation often indicates a talk or speech that is accompanied by visual aids, while a showcase may imply a collection of items that is being highlighted. Regardless of which synonym is used, the concept of displaying or demonstrating is central to all of them.