assertion vs recitation

assertion

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

  • 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. 

  • The act of asserting; positive declaration or averment. 

  • Maintenance; vindication 

recitation

noun
  • The material recited. 

  • The act of publicly reciting something previously memorized. 

  • A part of a song's lyrics that is spoken rather than sung. 

  • A regularly scheduled class, in a school, in which discussion occurs of the material covered in a parallel lecture. 

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