frown vs look down one's nose

frown

verb
  • To manifest displeasure or disapprobation; to look with disfavour or threateningly. 

  • To repress or repel by expressing displeasure or disapproval; to rebuke with a look. 

  • To communicate by frowning. 

  • To have a frown on one's face. 

noun
  • A downturn of the corners of the mouth, typically expressing sadness. 

  • A wrinkling of the forehead with the eyebrows brought together, typically indicating displeasure, severity, or concentration. 

look down one's nose

verb
  • To regard as inferior or distasteful; to hold in contempt. 

How often have the words frown and look down one's nose occurred in a corpus of books? (source: Google Ngram Viewer )