crossing vs separation

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. 

separation

noun
  • An object that separates two spaces. 

  • Departure from active duty, while not necessarily leaving the service entirely. 

  • An agreement legalizing such an arrangement. 

  • The act of disuniting two or more things, or the condition of being separated. 

  • The act or condition of two or more people being separated from one another. 

  • The place at which a division occurs. 

  • An interval, gap or space that separates things or people. 

  • The act or condition of a married couple living in separate homes while remaining legally married. 

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