disuse vs unconsciousness

disuse

noun
  • The state of not being used; neglect. 

verb
  • To cease the use of. 

unconsciousness

noun
  • ignorance or innocence; the state of being uninformed or unaware 

  • The state of lacking consciousness, of being unconscious 

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