clone vs droid

clone

noun
  • A person who is exactly like another person, in terms of looks or behavior. 

  • A group of identical cells derived from a single cell. 

  • A copy or imitation of something already existing, especially when designed to simulate it. 

  • A living organism (originally a plant) produced asexually from a single ancestor, to which it is genetically identical. 

verb
  • To create a clone of. 

droid

noun
  • A person having the qualities of an android; one with few or no emotions or little personality, or who acts in an unthinking manner; a robot. 

  • A robot, especially one made with some physical resemblance to a human (an android). 

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