banality vs lack of interest

banality

noun
  • The quality of being banal. 

  • Something which is banal. 

  • A feudal right or obligation, especially the obligation for a peasant to grind grain at the lord's mill, or the profits accruing from such rights. 

lack of interest

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