big toe vs ring finger

big toe

noun
  • The largest toe (usually) on each human foot (i.e. the toe closest to the other foot when the feet are flat on the ground, side by side, and the legs not crossed) or on a foot of certain other animals. 

ring finger

noun
  • Finger between middle finger and little finger; the "third finger" (UK) or the "fourth finger" (US), especially of the left hand. (The ring finger is the left hand; a ring finger is either hand.) 

How often have the words big toe and ring finger occurred in a corpus of books? (source: Google Ngram Viewer )