approve vs lecture

approve

verb
  • To regard as good; to commend; to be pleased with; to think well of. 

  • To officially sanction; to ratify; to confirm; to set as satisfactory. 

  • To make profit of; to convert to one's own profit — said especially of waste or common land appropriated by the lord of the manor. 

  • To consider worthy (to); to be pleased (with); to accept. 

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 approve and lecture occurred in a corpus of books? (source: Google Ngram Viewer )