door case vs mantel

door case

mantel

noun
  • A maneuver to surmount a ledge, involving pushing down on the ledge to bring up the body. Also called a mantelshelf. 

  • The shelf above a fireplace which may be also a structural support for the masonry of the chimney. 

verb
  • To surmount a ledge by pushing down on the ledge to bring up the body. 

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