pocketknife vs sword

pocketknife

noun
  • A knife with blades or tools that the user can fold or retract into its handle, and of a size small enough for carrying safely and handily in a pocket, especially when suited to heavier duty uses or ad hoc applications outdoors or in workshops. 

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 pocketknife and sword occurred in a corpus of books? (source: Google Ngram Viewer )