palliation vs plea

palliation

noun
  • Extenuation; mitigation. 

  • The alleviation of a disease's symptoms without a cure; temporary relief. 

plea

noun
  • That which is alleged or pleaded, in defense or in justification. 

  • The defendant’s answer to the plaintiff’s declaration and demand. 

  • A cause in court; a lawsuit; as, the Court of Common Pleas. 

  • An appeal, petition, urgent prayer or entreaty. 

  • An allegation of fact in a cause, as distinguished from a demurrer. 

  • An excuse; an apology. 

  • That which is alleged by a party in support of his cause. 

verb
  • To plead; to argue. 

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