chirl vs flitter

chirl

noun
  • A kind of musical warble. 

verb
  • To emit a low sound; to warble. 

flitter

noun
  • A rag; a tatter; a small piece or fragment. 

  • Any of various hesperiid butterflies of the genus Hyarotis. 

  • A fluttering movement 

  • A small aircraft or spacecraft. 

  • A small perceptible feeling 

verb
  • To scatter in pieces. 

  • To flutter or quiver. 

  • To move about rapidly and nimbly. 

  • To move quickly from one condition or location to another. 

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