depiction vs portraiture

depiction

noun
  • a drawing or painting 

  • a representation 

  • a lifelike image of something, either verbal or visual 

portraiture

noun
  • The art of painting or photographing portraits. 

  • A portrait (or portraits considered as a group). 

  • A portrait; a likeness; a painted resemblance; hence, that which is copied from some example or model. 

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