jargon vs term of art

jargon

noun
  • A technical terminology unique to a particular subject. 

  • Speech or language that is incomprehensible or unintelligible; gibberish. 

  • A language characteristic of a particular group. 

verb
  • To utter jargon; to emit confused or unintelligible sounds. 

term of art

noun
  • A word or phrase whose use or meaning is specific to a particular field of endeavor. 

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