lupper vs toenail

lupper

noun
  • A finger. 

  • A meal or snack eaten between the normal times for lunch and supper. 

toenail

noun
  • The thin, horny, transparent plate covering the upper surface of the end of a toe. 

verb
  • To fasten two pieces of lumber together by applying nails or screws into both boards at an angle. 

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