glazing vs terra cotta

glazing

noun
  • The act or process of glazing or an instance thereof. 

  • All the windows of a building. 

  • The art of covering with a vitreous substance. 

  • The material used in such act or process; glaze. 

  • The part of a window or wall made of glass or another transparent material. 

  • Semi-transparent colours painted thinly over others to modify the effect. 

terra cotta

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