demonstration vs taster

demonstration

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

  • A proof. 

  • Expression of one's feelings by outward signs. 

  • The act of demonstrating; showing or explaining something. 

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

  • An event at which something will be demonstrated. 

  • A show of military force. 

taster

noun
  • A person who is, by genetic makeup, able to taste phenylthiocarbamide 

  • A sample of something bigger or grander intended for future use 

  • Someone who tastes something, especially food, wine etc., for quality. 

  • A kind of zooid situated on the polyp-stem of certain Siphonophorae, resembling the feeding zooids, but destitute of mouths. 

  • An object in which, or by which, food or drink is tasted, for example a dram cup 

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