battle axe vs billhook

battle axe

noun
  • An ancient military weapon, an axe designed for combat, including (in heraldry) when borne on arms as a mark of prowess. 

  • A domineering, antagonistic woman. 

  • An allotment of land at the rear of another property, with a long, narrow strip of land connecting it to the roadway. 

  • An electric guitar. 

billhook

noun
  • A medieval polearm, fitted to a long handle, sometimes with an L-shaped tine or a spike protruding from the side or the end of the blade for tackling the opponent; a bill 

  • Written as bill hook: a sharply pointed spike growing from the tip of the upper mandible of the hatchlings of honeyguides, used to destroy the eggs and kill the chicks of the host species. 

  • An agricultural implement often with a curved or hooked end to the blade used for pruning or cutting thick, woody plants. 

  • Written as bill-hook: a part of the knotting mechanism in a reaper-binder or baler (agricultural machinery). 

  • Written as bill hook: a spiked hook used in offices and shops for hanging bills or other small papers such as receipts. 

verb
  • To use a billhook 

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