bastard sword vs broadsword

bastard sword

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

broadsword

noun
  • A type of early modern sword that has a broad double-edged blade for cutting (as opposed to the more slender thrust-oriented rapier) and typically a basket hilt. 

  • A person armed with such a sword. 

  • A flat, rectangular bread made from corn (maize) and beans by the Cherokee, traditionally by boiling rather than baking it. 

  • Synonym of longsword 

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