freelance vs freelancer

freelance

noun
  • Someone who sells their services to clients without a long-term employment contract. 

  • A medieval mercenary. 

verb
  • To produce or sell services as a freelance. 

  • To work as a freelance. 

adj
  • Of, or relating to a freelance; without employment contract. 

freelancer

noun
  • one who freelances 

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