hygienic vs insalutary

hygienic

adj
  • Whose expansion is guaranteed not to cause the accidental capture of identifiers. 

  • Pertaining to hygiene; clean, sanitary. 

insalutary

adj
  • Not salutary or wholesome; bad for health. 

  • Not tending to safety; productive of evil. 

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