buckram vs curl up

buckram

verb
  • To stiffen with or as if with 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. 

curl up

verb
  • to become coiled or shriveled 

  • to coil or shrivel, make into a coil 

  • to curl, make curly, shape into curls 

  • to become curly 

  • to shape one's body into a somewhat ball-like shape, with one's legs tucked into the abdomen, especially for cosiness or for protection. 

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