datum vs dialectic

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. 

dialectic

noun
  • Any formal system of reasoning that arrives at a truth by the exchange of logical arguments. 

  • Progress of conflict, especially class conflict. 

  • A contradiction of ideas that serves as the determining factor in their interaction. 

adj
  • dialectal 

  • dialectical 

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