alone vs incommunicado

alone

adj
  • Lacking peers who share one's beliefs, experiences, practices, etc. 

  • By oneself, solitary. 

adv
  • Not requiring anything further; merely. 

  • By oneself; apart from, or exclusive of, others; solo. 

  • Without outside help. 

  • Used to emphasize the size or extent of something by selecting a subset. 

  • Not permitting anything further; exclusively. 

incommunicado

adj
  • In a state or condition of inability or unwillingness to communicate. 

adv
  • In a manner in which communication with outsiders is not possible, for either voluntary or involuntary reasons, especially due to confinement or reclusiveness. 

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