coachwhip vs hag-taper

coachwhip

noun
  • Fouquieria splendens (ocotillo). 

  • A long whip used by the driver of a horse-drawn coach. 

  • Masticophis flagellum, a colubrid snake of North America. 

hag-taper

noun
  • The great woolly mullein (Verbascum thapsus) 

How often have the words coachwhip and hag-taper occurred in a corpus of books? (source: Google Ngram Viewer )