quality vs satisfactory

quality

noun
  • Something that differentiates a thing or person. 

  • The third step in OPQRST where the responder investigates what the NOI/MOI feels like. 

  • A newspaper with relatively serious, high-quality content. 

  • Level of excellence. 

  • The degree to which a man-made object or system is free from bugs and flaws, as opposed to scope of functions or quantity of items. 

  • In a two-phase liquid–vapor mixture, the ratio of the mass of vapor present to the total mass of the mixture. 

adj
  • Being of good worth, well made, fit for purpose; of high quality. 

satisfactory

noun
  • Somebody or something that meets requirements without exceeding them. 

  • The rating given to somebody or something that meets requirements without exceeding them. 

adj
  • Causing satisfaction; agreeable or pleasant; satisfying. 

  • Done to satisfaction; adequate or sufficient. 

  • Making atonement for a sin; expiatory. 

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