berm vs metre

berm

verb
  • To provide something with a berm 

noun
  • 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. 

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

  • Edge of a road. 

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

metre

verb
  • To put into metrical form. 

noun
  • The basic unit of length in the International System of Units (SI: Système International d'Unités), equal to the distance travelled by light in a vacuum in 1/299 792 458 seconds. The metre is equal to 39+⁴⁷⁄₁₂₇ (approximately 39.37) imperial inches. 

  • The rhythm or measure in verse and musical composition. 

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