korero vs natter

korero

noun
  • Among the Māori people, a meeting to discuss something. 

natter

verb
  • To nag. 

  • To talk casually; to discuss unimportant matters. 

noun
  • Mindless and irrelevant chatter. 

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