ashplant vs blackthorn

ashplant

noun
  • A walking stick. 

  • A stick kept for administering corporal punishment, a cane. 

  • An ash sapling. 

blackthorn

noun
  • A stick or staff taken from this tree. 

  • A large shrub or small tree, Prunus spinosa, that is native to Europe, western Asia, and north Africa. It has a dark bark and bears thorns. 

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