raving vs unenthusiastic

raving

noun

  • Wild, incoherent, or irrational talk. 

adj

  • Talking wildly. 

  • Causing excitement or wild praise. 

adv

  • Incoherently 

unenthusiastic

adj

  • Without enthusiasm; unexcited. 

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