brandmark vs hallmark

brandmark

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

noun
  • The logo of a brand 

hallmark

verb
  • To provide or stamp with a hallmark. 

noun
  • An official marking made by a trusted party, usually an assay office, on items made of precious metals. 

  • A distinguishing characteristic. 

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