kit-cat portrait vs portraiture

kit-cat portrait

portraiture

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

  • The art of painting or photographing portraits. 

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

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