demonstrations is a form of:

Demonstration



noun
1.
(demonstrating, a show of feeling, an explanation by example, experiment, etc, a display, proof, an outward expression. of feeling, a public showing of the good points of a product or working of a machine, a meeting, parade, or the like) ស្រាយបំភ្លឺ (និទស្សន៍) demonstration of a car ការធ្វើបង្ហាញឱ្យ, demonstration of affection ការបង្ហាញនូវ, political demonstration បាតុកម្ម
2.
(បច្ចេកទេស) ការបង្ហាញ សំរាយបំភ្លឺ