blab vs make known

blab

verb
  • To tell tales; to gossip without reserve or discretion. 

  • to speak carelessly or excessively 

noun
  • One who blabs; a babbler; a telltale; a gossip or gossiper. 

  • Gossip; prattle. 

make known

verb
  • To disclose (a secret). 

  • To announce (some information) generally. 

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