enthusiastic vs monomaniacal

enthusiastic

adj
  • Relating to enthusiasm, or divine possession. 

  • With zealous fervor; excited, motivated. 

monomaniacal

adj
  • Fanatical, or obsessed with one cause or idea to the exclusion of other concerns. 

  • Of or relating to a monomaniac. 

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