demonstration

(n) a show or display; the act of presenting something to sight or view
- the presentation of new data
- he gave the customer a demonstration
presentation, presentment,
(n) a show of military force or preparedness
- he confused the enemy with feints and demonstrations
(n) a public display of group feelings (usually of a political nature)
- there were violent demonstrations against the war
manifestation,
(n) proof by a process of argument or a series of proposition proving an asserted conclusion monstrance,
(n) a visual presentation showing how something works
- the lecture was accompanied by dramatic demonstrations
- the lecturer shot off a pistol as a demonstration of the startle response
demo,

presentation presentment manifestation monstrance demo

demonstrative