adverse possession vs completion

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. 

completion

noun
  • The conclusion of an act of conveyancing concerning the sale of a property. 

  • The act or state of being or making something complete; conclusion, accomplishment. 

  • The space resulting from such an act. 

  • The act of making a metric space complete by adding points. 

  • A forward pass that is successfully caught by the intended receiver. 

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