buckram vs cleave

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. 

cleave

verb
  • To split or sever something with, or as if with, a sharp instrument. 

  • To make or accomplish by or as if by cutting. 

  • Followed by to or unto: to adhere, cling, or stick fast to something. 

  • To split. 

  • To split (a complex molecule) into simpler molecules. 

  • Of a crystal, to split along a natural plane of division. 

  • To break a single crystal (such as a gemstone or semiconductor wafer) along one of its more symmetrical crystallographic planes (often by impact), forming facets on the resulting pieces. 

noun
  • Flat, smooth surface produced by cleavage, or any similar surface produced by similar techniques, as in glass. 

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