pleasing vs unsatisfactory

pleasing

adj
  • Agreeable; giving pleasure, cheer, enjoyment or gratification. 

noun
  • pleasure or satisfaction, as in the phrase "to my pleasing." 

unsatisfactory

adj
  • inadequate, substandard or not satisfactory 

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