discourage vs overpass

discourage

verb
  • To persuade somebody not to do (something). 

  • To extinguish the courage of; to dishearten; to depress the spirits of; to deprive of confidence; to deject. 

noun
  • Lack of courage 

overpass

verb
  • To disregard, skip, or miss something. 

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

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

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

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