criminal vs first-degree murder

criminal

noun
  • A person who is guilty of a crime, notably breaking the law. 

adj
  • Against the law; forbidden by law. 

  • Guilty of breaking the law. 

  • Abhorrent or very undesirable. 

  • Of or relating to crime or penal law. 

first-degree murder

noun
  • An act that constitutes the crime of first-degree murder. 

  • The criminal offence of murder in a form considered by law to be the most serious; the precise distinction may vary by jurisdiction but typically involves premeditation, or the choice of victim or other circumstances being regarded as especially blameworthy. 

How often have the words criminal and first-degree murder occurred in a corpus of books? (source: Google Ngram Viewer )