costumer vs graphic designer

costumer

noun
  • A person who designs, makes or supplies theatrical costumes; a costumier. 

  • A costume drama. 

  • A person who wears a costume or takes part in cosplay. 

graphic designer

noun
  • An artist who creates images for a specific purpose, such as advertising or web design. 

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