hermit vs troglodyte

hermit

noun
  • A recluse; someone who lives alone and shuns human companionship. 

  • A religious recluse; someone who lives alone for religious reasons; an eremite. 

  • A spiced cookie made with molasses, raisins, and nuts. 

  • A hermit crab. 

  • Any in the subfamily Phaethornithinae of hummingbirds. 

troglodyte

noun
  • A reclusive, reactionary or out-of-date person, especially if brutish. 

  • A person who chooses not to keep up-to-date with the latest software and hardware. 

  • Anything that lives underground. 

  • The Eurasian wren, Troglodytes troglodytes. 

  • A member of a supposed prehistoric race that lived in caves or holes, a caveman. 

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