erection vs piece of art

erection

noun
  • The act of building or putting up or together of something. 

  • The state or quality of being erect from engorgement with blood. 

  • A penis or clitoris that is erect. 

  • The physiological process by which erectile tissue, such as a penis or clitoris, becomes erect by being engorged with blood. 

  • Formal approval and official establishment of an institution such as a society or a monastery by higher church authorities. 

  • Anything erected or built. 

piece of art

noun
  • Synonym of work of art 

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