acquisitive prescription vs adverse possession

acquisitive prescription

adverse possession

noun
  • A means of acquiring title to another's real property without compensation by occupying the property in a manner that has under common law the requirements of being actual, open and notorious, exclusive, hostile, under cover of claim or right, and continuous for a certain number of years. 

How often have the words acquisitive prescription and adverse possession occurred in a corpus of books? (source: Google Ngram Viewer )