bastard sword vs sword

bastard sword

noun
  • Any of the large, straight-bladed European swords used with either one or two hands; a longsword. 

sword

noun
  • A long-bladed weapon device with a grip- a hilt (a pommel and cross guard), which is designed to cut, stab, slash and/or hack. 

  • A suit in the minor arcana in tarot. 

  • The weapon, often used as a heraldic charge. 

  • A card of this suit. 

  • One of the end bars by which the lay of a hand loom is suspended. 

verb
  • To stab or cut with a sword 

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