tapestry vs wallcovering

tapestry

noun
  • A heavy woven cloth, often with decorative pictorial designs, normally hung on walls. 

  • Anything with variegated or complex details. 

verb
  • To decorate with tapestry, or as if with a tapestry. 

wallcovering

noun
  • A covering for a wall, such as wallpaper 

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