incant vs lecture

incant

verb
  • To state solemnly, to chant. 

  • To recite an incantation. 

lecture

verb
  • To preach, to berate, to scold. 

  • To teach (somebody) by giving a speech on a given topic. 

noun
  • a class that primarily consists of a (weekly or other regularly held) lecture (as in sense 1) 

  • A berating or scolding. 

  • A spoken lesson or exposition, usually delivered to a group. 

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