demonstration vs trumpet call

demonstration

noun
  • The act of demonstrating; showing or explaining something. 

  • A public display of group opinion, such as a protest march. 

  • A proof. 

  • Expression of one's feelings by outward signs. 

  • A prisoner's act of beating up another prisoner. 

  • An event at which something will be demonstrated. 

  • A show of military force. 

trumpet call

noun
  • A call or summons on the trumpet. 

  • Any call to action. 

  • A small trumpet used by hunters to imitate the vocalisations of turkeys. 

How often have the words demonstration and trumpet call occurred in a corpus of books? (source: Google Ngram Viewer )