maxim vs slogan

maxim

noun
  • A precept; a succinct statement or observation of a rule of conduct or moral teaching. 

slogan

noun
  • A catchphrase associated with a product or service being advertised. 

  • A distinctive phrase of a person or group of people (such as a movement or political party); a motto. 

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