name brand vs trade name

name brand

noun
  • A trademark, or a distinctive name for a brand, or for a range of products by a single manufacturer 

  • A product having such a mark or name 

trade name

noun
  • A name used to identify a commercial product or service; may or may not be registered as a trademark. 

  • The name under which a business or firm operates. 

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