preach vs promulge

preach

verb
  • To teach or instruct by preaching; to inform by preaching. 

  • To proclaim by public discourse; to utter in a sermon or a formal religious harangue. 

  • To give a sermon. 

  • To advise or recommend earnestly. 

  • To give advice in an offensive or obtrusive manner. 

promulge

verb
  • To promulgate; to publish or teach. 

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