homily vs pep talk

homily

noun
  • A sermon, especially concerning a practical matter. 

  • A platitude. 

  • A moralizing lecture. 

adv
  • In a homey manner. 

pep talk

noun
  • A rallying speech made to instill enthusiasm and boost confidence 

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