pinup vs portrait

pinup

portrait

adj
  • Representing the actual features of an individual; not ideal. 

noun
  • A print orientation where the vertical sides are longer than the horizontal sides. 

  • A painting or other picture of a person, especially the head and shoulders. 

  • An accurate depiction of a person, a mood, etc. 

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