codicil vs contenement

codicil

noun
  • An addition or supplement that explains, modifies, or revokes a will or part of one. 

  • Any appendix or addition. 

  • An addition or supplement modifying any official document, such as a treaty. 

verb
  • To add a codicil to something. 

contenement

noun
  • That which is held together with another thing. 

  • That which is connected with a tenement, or thing holden, as a certain quantity of land adjacent to a dwelling, and necessary to the reputable enjoyment of the dwelling. 

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