DEMONSTRATION

A show or display; the act of presenting something to sight or view

Example: "The presentation of new data"

A show of military force or preparedness

Example: "He confused the enemy with feints and demonstrations"

A public display of group feelings (usually of a political nature)

Example: "There were violent demonstrations against the war"

Proof by a process of argument or a series of proposition proving an asserted conclusion

A visual presentation showing how something works

Example: "The lecture was accompanied by dramatic demonstrations"