Cub vs plebe

Cub

noun
  • A member of the Cub Scouts. 

  • A player on the team the "Chicago Cubs". 

plebe

noun
  • A freshman cadet at a military academy. 

  • A plebeian, a member of the lower class of Roman citizens. 

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