immortal vs suicidal

immortal

noun
  • One who is not susceptible to death. 

  • A member of an elite regiment of the Persian army. 

  • A member of the Académie française. 

  • An administrator of a multi-user dungeon. 

adj
  • Connected with or relating to immortality. 

  • Never to be forgotten; that merits being always remembered. 

  • Not susceptible to death; living forever; never dying. 

suicidal

noun
  • Someone suicidal; someone likely to kill themselves. 

adj
  • Likely to commit, or to attempt to commit, suicide. 

  • Extremely reckless. 

  • Highly likely to certain to result in the deaths of the participants; dangerous or reckless to such a degree as to be tantamount to suicide for those taking part. 

  • Pertaining to suicide. 

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