Tom vs Whosis

Tom

name
  • A nickname for a common man. 

  • A diminutive of the male given name Thomas, also used as a formal male given name. 

  • A large, deep-toned bell, or a particularly notable example of one. 

noun
  • Synonym of menstruation. 

Whosis

name
  • Placeholder for a forgotten name. 

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