malignant vs noncancerous

malignant

adj
  • Harmful, malevolent, injurious. 

  • Tending to produce death; threatening a fatal issue. 

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

noncancerous

adj
  • That is not cancerous; benign 

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