pound the pavement vs stroll

pound the pavement

verb
  • To travel on foot; to walk or run. 

  • To campaign diligently; to seek something, such as business, employment, or answers. 

stroll

verb
  • To wander on foot; to ramble idly or leisurely; to rove. 

  • To walk the streets as a prostitute. 

  • To go somewhere with ease. 

  • To do, obtain, or achieve something in a casual and effortless way. 

noun
  • A wandering on foot; an idle and leisurely walk; a ramble. 

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