coexistence vs similitude

coexistence

noun
  • The state of two or more things existing together, usually in a temporal or spatial sense, with or without mutual interaction. 

similitude

noun
  • A way in which two people or things share similitude. 

  • Similarity or resemblance to something else. 

  • Someone or something that closely resembles another; a duplicate or twin. 

  • A parable or allegory. 

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