convenient vs satisfactory

convenient

adj
  • Serving to reduce a difficulty, or accessible with minimum difficulty; expedient. 

  • Suspicious due to suiting someone's purposes very well. 

satisfactory

adj
  • Done to satisfaction; adequate or sufficient. 

  • Causing satisfaction; agreeable or pleasant; satisfying. 

  • Making atonement for a sin; expiatory. 

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

  • Somebody or something that meets requirements without exceeding them. 

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