communicate vs know

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. 

know

verb
  • To have knowledge; to have information, be informed. 

  • To perceive the truth or factuality of; to be certain of or that. 

  • To experience. 

  • To understand or have a grasp of through experience or study. 

  • To be or become aware or cognizant. 

  • To be able to play or perform (a song or other piece of music). 

  • To be acquainted or familiar with; to have encountered. 

  • To be aware of; to be cognizant of. 

  • To recognize as the same (as someone or something previously encountered) after an absence or change. 

noun
  • Knowledge; the state of knowing. 

  • Knowledge; the state of knowing; now confined to the fixed phrase ‘in the know’ 

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