buckram vs limber 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. 

limber up

verb
  • To make (someone or something) more limber or flexible. 

  • To stretch one's muscles to make them more limber, usually as a preparation for physical exercise. 

  • To prepare; to make oneself ready. 

  • To attach a limber. 

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