abirritate vs allay

abirritate

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

allay

verb
  • To alleviate; to abate; to mitigate. 

  • To make quiet or put at rest; to pacify or appease; to quell; to calm. 

noun
  • Alleviation; abatement; check. 

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