fancying vs woolgathering

fancying

noun
  • Something fancied or imagined. 

woolgathering

noun
  • Indulgence in idle fancies or daydreams. 

  • The gathering of fragments of wool torn from sheep by bushes, etc. 

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