malignant vs suicidal

malignant

adj
  • Tending to produce death; threatening a fatal issue. 

  • Harmful, malevolent, injurious. 

noun
  • A deviant; a person who is hostile or destructive to society. 

suicidal

adj
  • Pertaining to suicide. 

  • 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. 

noun
  • Someone suicidal; someone likely to kill themselves. 

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