hebetate vs humdrum

hebetate

adj

  • Having a dull or blunt and soft point 

  • obtuse; dull 

verb

  • To render obtuse; to dull; to blunt. 

humdrum

adj

  • Lacking variety or excitement; dull; boring. 

noun

  • The quality of lacking variety or excitement. 

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