accompaniment vs contenement

accompaniment

noun
  • That which accompanies; something that attends as a circumstance, or which is added to give greater completeness to the principal thing, or by way of ornament, or for the sake of symmetry. 

  • A part, usually performed by instruments, that gives support or adds to the background in music, or adds for ornamentation; also, the harmony of a figured bass. 

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 accompaniment and contenement occurred in a corpus of books? (source: Google Ngram Viewer )