datum vs empathy

datum

noun
  • A premise from which conclusions are drawn. 

  • A floating reference point, or SLDMB, used to evaluate surface currents in a body of water. Often employed by coastal search and rescue. 

  • A fixed reference point or set of reference points which precisely define a system of measurement or a coordinate system. 

  • A fact known from direct observation. 

verb
  • To provide missing data points by using a mathematical model to extrapolate values that are outside the range of a measuring device. 

empathy

noun
  • Capacity to understand another person's point of view or the result of such understanding. 

  • Identification with or understanding of the thoughts, feelings, or emotional state of another person. 

  • A paranormal ability to psychically read another person's emotions. 

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