homunculus vs titman

homunculus

noun
  • A miniature man, once imagined by spermists to be present in human sperm. 

  • The nerve map of the human body that exists on the parietal lobe of the human brain. 

titman

noun
  • A short person. 

  • The runt of a litter. 

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