scritch vs shrill

scritch

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

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

noun
  • The act of scratching an itch. 

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

shrill

verb
  • To make a shrill noise. 

noun
  • A shrill sound. 

adj
  • Sharp or keen to the senses. 

  • Having a shrill voice. 

  • Fierce, loud, strident. 

  • High-pitched and piercing. 

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