brandmark vs logo

brandmark

noun
  • The logo of a brand 

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

logo

noun
  • A visual symbol or emblem that acts as a trademark or a means of identification of a company or organization. 

  • An audio recording for the same purpose; a jingle. 

  • A single graphic which contains one or more separate elements. 

  • An ensign, a badge of office, rank, or power. 

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