* Show - This is the most common and general noun form. It can refer to a performance, exhibition, or display. For example, "We went to a magic show."
* Showing - This is the gerund form of the verb "show." It refers to the act of showing something. For example, "The showing of the film was canceled."
* Showcase - This noun refers to a special event or exhibit that is designed to highlight something. For example, "The company used the trade show as a showcase for its new products."
* Display - This noun refers to a visual presentation of something. For example, "The store had a colorful display of fruits and vegetables."
The best noun form to use will depend on the specific meaning you want to convey.