embankment vs wharf

embankment

noun
  • a long mound of earth, stone, or similar material, usually built for purposes such as to hold back or store water, for protection from weather or enemies, or to support a road or railway. 

wharf

noun
  • A man-made landing place for ships on a shore or river bank. 

  • The bank of a river, or the shore of the sea. 

verb
  • To place on a wharf. 

  • To secure by a wharf. 

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