blackthorn vs cosh

blackthorn

noun
  • 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. 

  • A stick or staff taken from this tree. 

cosh

adj
  • cosy; snug 

noun
  • A blunt instrument such as a bludgeon or truncheon. 

  • A weapon made of leather-covered metal similar to a blackjack. 

verb
  • To strike with a weapon of this kind. 

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