arris vs crossing

arris

noun
  • A sharp edge or ridge formed by the intersection of two surfaces 

  • A ridge formed on the surface of flaked stone, such as a arrowhead or hand axe, as the result of the intersection of two or more flake removals. 

  • A sharp edge or ridge formed by the intersection of two curved surfaces 

  • Buttocks, arse. 

crossing

noun
  • A pair of intersecting edges. 

  • The volume formed by the intersection of chancel, nave and transepts in a cruciform church; often with a tower or cupola over it. 

  • A voyage across a body of water. 

  • A place at which a river, railroad, or highway may be crossed. 

  • The act by which terrain or a road etc. is crossed. 

  • A pair of parallel lines printed on a cheque 

  • Movement into a crossed position. 

  • An intersection where roads, lines, or tracks cross. 

adj
  • Extending or lying across; in a crosswise direction. 

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