hush up vs intimate

hush up

verb
  • To keep secret, to prevent from becoming known. 

  • To become quiet; to cease making sounds. 

intimate

verb
  • To suggest or disclose (something) discreetly. 

  • To notify. 

adj
  • Pertaining to details that require great familiarity to know. 

  • Closely acquainted; familiar. 

  • Very finely mixed. 

  • Of or involved in a sexual relationship. 

  • Personal; private. 

noun
  • A very close friend. 

  • Women's underwear, sleepwear, or lingerie, especially offered for sale in a store. 

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