datum vs plea

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. 

plea

noun
  • An allegation of fact in a cause, as distinguished from a demurrer. 

  • That which is alleged or pleaded, in defense or in justification. 

  • The defendant’s answer to the plaintiff’s declaration and demand. 

  • A cause in court; a lawsuit; as, the Court of Common Pleas. 

  • An appeal, petition, urgent prayer or entreaty. 

  • An excuse; an apology. 

  • That which is alleged by a party in support of his cause. 

verb
  • To plead; to argue. 

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