hard shoulder vs wayside

hard shoulder

noun

  • A verge to the side of a highway, which should be used only in case of an emergency (especially on a motorway) 

wayside

noun

  • The side of a road or path. 

  • A rest area. 

adj

  • Situated near the side of a road or path. 

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