adverse possession vs assignment

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. 

assignment

noun
  • A transfer of a right or benefit from one person to another. 

  • A document that effects this transfer. 

  • The act of assigning; the allocation of a job or a set of tasks. 

  • An assigned task. 

  • The categorization of persons as belonging to the male or female sex. 

  • An operation that assigns a value to a variable. 

  • A position to which someone is assigned. 

  • A task given to students, such as homework or coursework. 

  • The categorization of something as belonging to a specific category. 

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