cub vs lastborn

cub

noun
  • A child, especially an awkward, rude, ill-mannered boy. 

  • A young man who seeks relationships with older women, or "cougars". 

  • A young fox. 

  • Synonym of cub reporter 

  • An adolescent furry character. 

  • The young of certain other animals, including the bear, wolf, lion and tiger. 

verb
  • To hunt fox cubs. 

  • To give birth to cubs. 

lastborn

noun
  • The youngest child of a family. 

  • The youngest member of any company or organization. 

adj
  • Born last in a family; youngest in a the family. 

  • Younger than anyone else in a group. 

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