doff vs whip off

doff

verb
  • To remove or take off (something such as clothing). 

  • To get rid of, to throw off. 

  • To remove or tip a hat, as in greeting, salutation or as a mark of respect. 

  • To strip; to divest; to undress. 

whip off

verb
  • To remove something (especially an item of clothing) with a swift movement. 

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