abirritate vs conciliate

abirritate

verb
  • To diminish the sensibility of; to debilitate; to soothe. 

conciliate

verb
  • To make calm and content, or regain the goodwill of; to placate. 

  • To mediate in a dispute. 

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