humdrum vs privative

humdrum

adj
  • Lacking variety or excitement; dull; boring. 

noun
  • The quality of lacking variety or excitement. 

privative

adj
  • consisting in the absence of something; negative 

  • causing privation; depriving 

  • indicating the absence of something 

noun
  • something that causes privation or indicates an absence 

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