crust vs scruff

crust

noun
  • Nerve, gall. 

  • An outer layer composed of pastry 

  • The top or bottom slice of a loaf of bread; The end piece of a loaf; The heel. 

  • The shell of crabs, lobsters, etc. 

  • The outermost layer of any terrestrial planet. 

  • The outermost layer of the lithosphere of the Earth. 

  • The external, hardened layer of certain foodstuffs, including most types of bread, fried meat, etc. 

  • A living. 

  • The bread-like base of a pizza. 

  • A more solid, dense or hard layer on a surface or boundary. 

verb
  • To cover with a crust. 

  • To form a crust. 

scruff

noun
  • The back of the neck, nape; also scruff of the neck. 

  • Someone with an untidy appearance. 

  • The loose skin at the back of the neck of some animals. 

  • Stubble, facial hair (on males). 

verb
  • To lift or carry by the scruff. 

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