landing vs seaport

landing

noun
  • A place on a shoreline where a boat lands. 

  • An arrival at a surface, as of an airplane or any descending object. 

  • A level area at the top of a flight of stairs, or connecting one flight with another. 

seaport

noun
  • A town or harbour with facilities for seagoing ships to dock and take on or discharge cargo. 

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