chattering vs scritch

chattering

noun
  • A noise that chatters. 

  • Output fluctuation before reaching a stable condition. 

adj
  • That chatters 

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. 

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