assertion vs gesture

assertion

noun
  • The act of asserting; positive declaration or averment. 

  • A statement in a program asserting a condition expected to be true at a particular point, used in debugging. 

  • A statement or declaration which lacks support or evidence. 

  • Maintenance; vindication 

  • Something which is asserted; a declaration; a statement asserted. 

gesture

noun
  • An act or a remark that serves as a formality or as a sign of attitude. 

  • A motion made with a pointing device, or on a touchscreen, that is recognised by the system as a command. 

  • A motion of the limbs or body, especially one made to emphasize speech. 

verb
  • To make a gesture or gestures. 

  • To accompany or illustrate with gesture or action. 

  • To express something by a gesture or gestures. 

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