nod vs side-eye

nod

noun
  • An instance of inclining the head up and down, as to indicate agreement, or as a cursory greeting. 

  • A nomination. 

  • Approval. 

  • A reference or allusion to something. 

verb
  • To signify by a nod. 

  • To incline the head up and down, as to indicate agreement. 

  • To allude to something. 

  • To sway, move up and down. 

  • To make a mistake by being temporarily inattentive or tired 

  • To briefly incline the head downwards as a cursory greeting. 

  • To fall asleep while under the influence of opiates. 

  • To gradually fall asleep. 

  • To head; to strike the ball with one's head. 

side-eye

noun
  • A sidelong look, particularly of animosity, judgment, or suspicion. 

verb
  • To look at out of the corner of one's eye, particularly with animosity, or in a judgmental or suspicious manner. 

How often have the words nod and side-eye occurred in a corpus of books? (source: Google Ngram Viewer )