monotonous vs noteworthy

monotonous

adj
  • Having an unvarying pitch or tone. 

  • Tedious, repetitious, or lacking in variety. 

noteworthy

noun
  • A noteworthy person. 

adj
  • Deserving attention; notable; worthy of notice. 

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