byway vs roadside

byway

noun
  • a road that is not frequently travelled. 

  • a little-known or arcane field of study or detail. 

  • a road or track not following a main route; a minor road or path. 

roadside

noun
  • The area on either side of a road. 

adj
  • Located beside a road. 

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