homicidal vs malignant

homicidal

adj
  • Of or pertaining to homicide. 

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. 

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