leer vs sneer

leer

noun
  • A significant side glance; a glance expressive of some passion, as malignity, amorousness, etc.; a sly or lecherous look. 

  • The flank or loin. 

  • An arch or affected glance or cast of countenance. 

verb
  • To look sideways or obliquely; now especially with sexual desire or malicious intent. 

  • To entice with a leer or leers. 

sneer

noun
  • A display of contempt; scorn. 

  • A facial expression where one slightly raises one corner of the upper lip, generally indicating scorn. 

verb
  • To utter with a grimace or contemptuous expression; to say sneeringly. 

  • To raise a corner of the upper lip slightly, especially in scorn 

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