divulge vs refrain

divulge

verb
  • To indicate publicly; to proclaim. 

  • To make public or known; to communicate to the public; to tell (information, especially a secret) so that it may become generally known. 

refrain

verb
  • To stop oneself from some action or interference; to abstain. 

  • To abstain from (food or drink). 

noun
  • The chorus or burden of a song repeated at the end of each verse or stanza. 

  • A much repeated comment, complaint, or saying. 

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