assert vs datum

assert

noun
  • an assertion; a section of source code which tests whether an expected condition is true. 

verb
  • He would often assert that there was life on other planets. 

  • To maintain or defend, as a cause or a claim, by words or measures; to vindicate a claim or title to 

  • To insist on the legitimacy of one's rights, opinion, etc; not to allow oneself to be dismissed; to ensure that one is taken into consideration; to make oneself respected; to be assertive. 

  • To use or exercise and thereby prove the existence of. 

  • To set a signal on a line using a voltage or electric current. 

  • To specify that a condition or expression is true at a certain point in the code. 

  • To declare with assurance or plainly and strongly; to state positively. 

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. 

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