demonstrate

1. (transitive) To show how to use (something).Examples: "Can you demonstrate the new tools for us?"; "In this tape, a velvet-voiced narrator provides a stroke-by-stroke guide to massaging your partner. As she speaks, comely nude couples demonstrate."

2. (intransitive) To participate in or organize a demonstration.Examples: "Those people outside are demonstrating against the election results."

3. (transitive) To show, display, or present; to prove or make evidentExamples: "The debate was not long on policy, as questions about the Affordable Care Act and the war in Syria demonstrated."; ""What we are trying to demonstrate is that freight lines at lower speeds can be electrified much more cheaply. […]""