bub vs lastborn

bub

noun
  • A baby. 

  • A term of familiar address; bubba; bubby. 

  • A woman's breast. 

  • A young brother; a little boy; a familiar term of address for a small boy. 

  • An alcoholic malt liquor, especially beer. 

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 bub and lastborn occurred in a corpus of books? (source: Google Ngram Viewer )