buckram vs interfacing

buckram

noun
  • A coarse cloth of cotton, linen or hemp, stiffened with size or glue, used in bookbinding to cover and protect the books, in garments to keep them in the form intended, and for wrappers to cover merchandise. 

  • A plant, Allium ursinum, also called ramson, wild garlic, or bear garlic. 

verb
  • To stiffen with or as if with buckram. 

interfacing

noun
  • A layer of fabric inserted between other layers of a garment to provide stiffening 

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