extemporaneous vs winged

extemporaneous

adj
  • With inadequate preparation or without advance thought; offhand. 

winged

adj
  • Flying or soaring as if on wings. 

  • Swift. 

  • having wings of a specified kind 

  • having the specified number of wings 

  • Having wings. 

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