alexipharmac vs mitigation

alexipharmac

noun
  • A medical remedy for protecting the body, or an antidote, against a harmful substance, especially a poison or venom (specifically, that of a snake); an alexipharmic, an antidote. 

adj
  • Of or pertaining to an alexipharmac; also, acting as an alexipharmac by protecting against or warding off the ill effects of a harmful substance, especially a poison or venom; alexipharmic. 

mitigation

noun
  • A reduction or decrease of something harmful or unpleasant. 

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