chirp vs scritch

chirp

noun
  • A short, sharp or high note or noise, as of a bird or insect. 

  • A pulse of signal whose frequency sweeps through a band of frequencies for the duration of the pulse. 

verb
  • To make a short, sharp, cheerful note, as of small birds or crickets. 

  • To speak in a high-pitched staccato. 

  • To modify (a pulse of signal) so that it sweeps through a band of frequencies throughout its duration. 

  • To speak rapid insulting comical banter back and forth. 

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