blackthorn vs bludgeon

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. 

bludgeon

noun
  • A short, heavy club, often of wood, which is thicker or loaded at one end. 

verb
  • To coerce someone, as if with a bludgeon. 

  • To strike or hit with something hard, usually on the head; to club. 

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