Maroon vs sweetheart

Maroon

noun
  • A member of the Queensland State of Origin rugby league team, who wear maroon-coloured jerseys. 

name
  • A surname. 

sweetheart

noun
  • A female member of a college or university fraternity. 

  • A person who is always very kind. 

  • A person very much liked or loved by someone, especially when both partners are young. 

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