intersection vs overpass

intersection

noun
  • The junction of two (or more) paths, streets, highways, or other thoroughfares. 

  • The element where two or more straight lines of synchronized skaters pass through each other.http://www.isu.org/vsite/vcontent/content/transnews/0,10869,4844-128590-19728-18885-295370-3787-4771-layout160-129898-news-item,00.html 

  • The pullback of a corner of monics. 

  • The point or set of points common to two geometrical objects (such as the point where two lines meet or the line where two planes intersect). 

  • The set containing all the elements that are common to two or more sets. 

  • Any overlap, confluence, or crossover. 

overpass

noun
  • A section of a road or path that crosses over an obstacle, especially another road, railway, etc. 

verb
  • To pass above something, as when flying or moving on a higher road. 

  • To exceed, overstep, or transcend a limit, threshold, or goal. 

  • To disregard, skip, or miss something. 

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