have a tête-à-tête vs natter

have a tête-à-tête

natter

noun

  • Mindless and irrelevant chatter. 

verb

  • To nag. 

  • To talk casually; to discuss unimportant matters. 

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