lastborn vs youngest

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. 

youngest

noun
  • The youngest child in a family, or individual in a group. 

adj
  • Most recently begun or formed. 

  • Receiving dealt cards last, i.e. immediately before the next deal to the eldest. 

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