demonstration

(noun) a show or display; the act of presenting something to sight or view. Synonyms: presentation, presentment. Examples: "The presentation of new data." "He gave the customer a demonstration."

(noun) a show of military force or preparedness. Example: "He confused the enemy with feints and demonstrations."

(noun) a public display of group feelings (usually of a political nature). Synonyms: manifestation. Example: "There were violent demonstrations against the war."

(noun) proof by a process of argument or a series of proposition proving an asserted conclusion. Synonyms: monstrance.

(noun) a visual presentation showing how something works. Synonyms: demo. Examples: "The lecture was accompanied by dramatic demonstrations." "The lecturer shot off a pistol as a demonstration of the startle response."