deaf vs not cognizant

deaf

adj
  • Unwilling to listen or be persuaded; determinedly inattentive; regardless. 

  • Unable to hear, or only partially able to hear. 

  • Of or relating to the community of deaf people. 

noun
  • A deaf person. 

not cognizant

How often have the words deaf and not cognizant occurred in a corpus of books? (source: Google Ngram Viewer )