disinterest vs objectivity

disinterest

noun
  • An absence of interest (attention or curiosity). 

  • The absence of interest (bias or stake). 

verb
  • To render disinterested. 

objectivity

noun
  • The state of being objective, just, unbiased and not influenced by emotions or personal prejudices. 

  • The world as it really is; reality. 

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