brandmark vs slogan

brandmark

noun
  • The logo of a brand 

verb
  • To name or mark by branding; to give a brandmark to. 

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 brandmark and slogan occurred in a corpus of books? (source: Google Ngram Viewer )