Demonstration
Part of speech: noun
Definition: The act of demonstrating; showing or explaining something. An event at which something will be demonstrated. A public display of group opinion. A show of military force. A mathematical proof.
Example sentence: The $25,000 stunt was a demonstration of the automobile air bag system for an Allstate Insurance television commercial. I drove a car into a concrete obstacle at 25 m.p.h.
Monstrance
Part of speech: noun
Definition: An ornamental, often precious receptacle, either open or with a transparent cover, in which the consecrated host is placed for veneration.