unaware vs unsleeping

unaware

adj
  • Not noticing; paying no heed; thoughtless; inattentive. 

  • Not aware or informed; lacking knowledge. 

unsleeping

adj
  • Not sleeping. 

  • Remaining constantly active. 

  • Remaining constantly alert. 

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