expend vs squirrel

expend

verb
  • to consume, exhaust (some resource) 

  • to spend, disburse 

squirrel

verb
  • To store in a secretive manner, to hide something for future use 

noun
  • Someone who displays a squirrel-like qualities such as stealing or hoarding objects. 

  • A person, usually a freezoner, who applies L. Ron Hubbard's technology in a heterodox manner. 

  • Any of the rodents of the family Sciuridae distinguished by their large bushy tail. 

  • One of the small rollers of a carding machine which work with the large cylinder. 

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