marketable vs unmerchantable

marketable

adj
  • saleable (of goods) or employable (of people) 

  • Of or pertaining to marketability; capable of being marketed. 

unmerchantable

adj
  • Not merchantable; not fit for market; being of a kind, quality, or quantity that is not salable. 

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