parlance vs utterance

parlance

noun
  • A certain way of speaking, of using words; especially that associated with a particular job or interest. 

  • Of a word, the quality of being lexicalized; especially as jargon or slang. 

utterance

noun
  • A manner of speaking. 

  • Something spoken. 

  • The ability to speak. 

  • An act of uttering. 

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