demulcent vs quietive

demulcent

adj
  • Soothing or softening. 

noun
  • A soothing medication used to relieve pain in inflamed tissues. 

quietive

adj
  • Tending to quieten or make passive. 

noun
  • Something that quietens; a sedative. 

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