demonstrate
/ˈdɛmənˌstreɪt/
verb
-strates; -strated; -strating
[+ obj] to prove (something) by showing examples of it :to show evidence of (something)
to prove (something) by being an example of it :to be evidence of (something)
[+ obj] :to show (a quality, feeling, etc.) clearly to other people
[+ obj] :to show or explain how something is used or done :to show or explain the function or use of (something)
[no obj] :to take part in an event in which people gather together in order to show that they support or oppose something or someone