roe vs small fry

roe

noun
  • The eggs of fish. 

  • The sperm of certain fish. 

  • The ovaries of certain crustaceans. 

  • A mottled appearance of light and shade in wood, especially in mahogany. 

small fry

noun
  • 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 

  • One or more children. 

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