scritch vs thump

scritch

noun
  • A light scratching sound, like a small animal burrowing. 

  • The act of scratching an itch. 

verb
  • To scratch so as to relieve an itch or irritation. 

  • To make a light scratching sound, like a small animal burrowing. 

thump

noun
  • A blow that produces a muffled sound. 

  • The sound of such a blow; a thud. 

verb
  • To throb with a muffled rhythmic sound. 

  • To hit (someone or something) as if to make a thump. 

  • To cause to make a thumping sound. 

  • To thud or pound. 

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