lastborn vs small fry

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. 

small fry

noun
  • One or more children. 

  • One or more small or immature fish. 

  • One or more relatively small and insignificant persons or things of relatively little consequence, importance, or value. Synonyms: small potatoes, minnow, nobody, no one 

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