Carl vs Frank

Carl

name
  • A male given name from the Germanic languages, equivalent to English Charles. 

noun
  • A student at Carleton College, Minnesota. 

Frank

name
  • A male given name from the Germanic languages. 

  • A diminutive of the male given name Francis 

  • A surname transferred from the nickname. 

noun
  • One of the Franks, a Germanic federation that inhabited parts of what are now France, the Low Countries and Germany. 

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