oration vs recitation

oration

noun
  • A formal, often ceremonial speech. 

  • A specific form of short, solemn prayer said by the president of the liturgical celebration on behalf of the people. 

  • A lengthy speech or argument in a private setting. 

verb
  • To deliver an oration; to speak. 

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 oration and recitation occurred in a corpus of books? (source: Google Ngram Viewer )