embarcadère vs landing stage

embarcadère

noun
  • A pier, a wharf. 

landing stage

noun
  • A floating platform attached at one end to a wharf so as to rise and fall with the tide, and thus facilitate passage between the wharf and a vessel lying beside the stage. 

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