printmaker vs printworker

printmaker

noun
  • A person who makes prints of works of art, (particularly) a self-employed craftsman. 

printworker

noun
  • Synonym of printmaker, a person who works making prints of works of art, (particularly) a relatively unskilled employee. 

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