death sentence vs punishment

death sentence

noun
  • A decree that someone be put to death as a punishment for a crime; a sentence of execution. 

  • Anything that spells death. 

punishment

noun
  • A penalty to punish wrongdoing, especially for crime. 

  • Any harsh treatment or experience; rough handling. 

  • The act or process of punishing, imposing and/or applying a sanction. 

  • A suffering by pain or loss imposed as retribution 

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