delineate vs instantiate

delineate

verb
  • To describe or depict with words or gestures. 

  • To outline or mark out. 

  • To depict, represent with pictures. 

  • To sketch out, draw or trace an outline. 

instantiate

verb
  • To represent (a concept, theme, or principle) by an instance. 

  • To create an object (an instance) of a specific class. 

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