berm vs murus

berm

noun
  • A ledge between the parapet and the moat in a fortification. 

  • A raised bank or path, especially the bank of a canal opposite the towpath. 

  • A mound or bank of earth, used especially as a barrier or to provide insulation. 

  • A terrace formed by wave action along a beach. 

  • A strip of land between a street and sidewalk. 

  • Edge of a road. 

  • A narrow ledge or shelf, as along the top or bottom of a slope. 

verb
  • To provide something with a berm 

murus

noun
  • A wall. 

  • A pattern-forming ridge on the surface of a pollen grain. 

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