cubitus vs elbow bump

cubitus

noun
  • The forearm; the arm from the elbow to fingertip, or the corresponding portion of a jointed limb of an animal that uses the limb for locomotion or grasping. 

  • The elbow, or the corresponding joint in the forelimb of a quadruped. 

  • One of the major veins of the insect wing, between the media and the postcubitus; the vein running along the dorsal edge of the discal cell. 

elbow bump

noun
  • The touching of elbows between two people, sometimes as an alternative to a handshake, fist bump, or other form of contact when attempting to avoid the spread of germs. 

  • A hit to the elbow; also, an injury to the elbow caused by such a hit. 

  • A hit or jab made with the elbow. 

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