couturier vs designer

couturier

noun
  • A company that is owned by or employs such a person; a fashion house. 

  • A person who designs haute couture (high fashion). 

designer

noun
  • A person who designs something, or who designs things as a profession. 

  • A plotter or schemer. 

  • A software tool for designing things. 

adj
  • Created by a designer, especially a fashion designer. 

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