knep vs manducate

knep

verb
  • To bite gently, nibble. 

  • To pick or pick off (e.g. flowers, berries, etc.) 

  • To clasp the hands; to clench one's fists. 

  • To graze, crop; (of horses) to bite in play. 

  • To tie or bundle something tightly and securely. 

noun
  • Synonym of kneppars 

manducate

verb
  • To chew; to masticate. 

  • To eat. 

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