cascabel vs pintle

cascabel

noun
  • A knob at the end of a cannon, cast onto the gun breech, to which a heavy rope is attached in order to control recoil. 

  • A small, round, hot variety of chili pepper, Capsicum annuum, which rattles when dry. 

  • A bell attached to a sleigh or sleigh harness. 

pintle

noun
  • An iron pin used to control recoil of a cannon or around which a gun carriage revolves. 

  • A pin or bolt, usually vertical, which acts as a pivot for a hinge or a rudder. 

  • The penis. 

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