screak vs scritch

screak

noun
  • shriek; screech 

verb
  • shriek; screech 

scritch

noun
  • The act of scratching an itch. 

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

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 screak and scritch occurred in a corpus of books? (source: Google Ngram Viewer )