communicate vs open up

communicate

verb
  • To impart or transmit (information or knowledge) to someone; to make known, to tell. 

  • To pass on (a disease) to another person, animal etc. 

  • To express or convey ideas, either through verbal or nonverbal means; to have intercourse, to exchange information. 

  • To receive the bread and wine at a celebration of the Eucharist; to take part in Holy Communion. 

  • To administer the Holy Communion to (someone). 

  • To be connected with (another room, vessel etc.) by means of an opening or channel. 

  • To impart or transmit (an intangible quantity, substance); to give a share of. 

open up

verb
  • To reveal oneself; to share personal information about oneself; to become communicative. 

  • Synonym of cheat out (“to face or turn toward the audience more than would be natural”) 

  • To begin running, driving, travelling, etc., at maximum speed. 

  • To commence firing weapons. 

  • To rain. 

  • To open. 

  • To widen. 

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