lifelike model vs mannequin

lifelike model

mannequin

noun
  • A dummy, or life-size model of the human body, used for the fitting or displaying of clothes. 

  • A jointed model of the human body used by artists, especially to demonstrate the arrangement of drapery. 

  • An anatomical model of the human body for use in teaching of e.g. CPR. 

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