artist's impression vs statue

artist's impression

noun
  • A sketch or drawing of someone or something, produced when it is not possible to take a photograph. 

statue

noun
  • A three-dimensional work of art, usually representing a person or animal, usually created by sculpting, carving, molding, or casting. 

verb
  • To form a statue of; to make into a statue. 

How often have the words artist's impression and statue occurred in a corpus of books? (source: Google Ngram Viewer )