lupper vs palp

lupper

noun
  • A finger. 

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

palp

noun
  • A fleshy part of a fingertip. 

  • Synonym of pedipalp. 

verb
  • To feel, to explore by touch. 

adj
  • Palpatory; obtained by palpation. 

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