Old Master vs fine artist

Old Master

noun
  • Any of various early European painters whose works are regarded as superlative. 

  • A painting by an Old Master. 

fine artist

noun
  • An artist who creates only aesthetic art; an artist who persists in fine arts as opposed to industrial or functional arts. 

  • Used other than figuratively or idiomatically: see fine, artist. 

How often have the words Old Master and fine artist occurred in a corpus of books? (source: Google Ngram Viewer )