demonstration

Noun

• 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
    

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

• a public display of group feelings (usually of a political nature)
  • there were violent demonstrations against the war
    

• a show of military force or preparedness
  • he confused the enemy with feints and demonstrations
    

• a show or display; the act of presenting something to sight or view
  • the presentation of new data
    
  • he gave the customer a demonstration
    

Related words

• Synonyms: 
  demo , monstrance , manifestation , presentation , presentment