intertidal zone vs oceanfront

intertidal zone

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

oceanfront

noun
  • The side of a property that faces the ocean. 

  • A property that is adjacent to the ocean. 

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

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