intertidal zone vs shorefront

intertidal zone

noun
  • The part of a shore between high water and low water, especially the beach exposed at maximum ebb spring tides. 

shorefront

noun
  • The area fronting on a coastline. 

adj
  • Of property or real estate: adjacent to the shore. 

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