cite vs mention

cite

verb
  • to quote; to repeat, as a passage from a book, or the words of another. 

  • to list the source(s) from which one took information, words or literary or verbal context. 

  • to summon officially or authoritatively to appear in court. 

noun
  • a citation 

mention

verb
  • To utter a word or expression in order to refer to the expression itself, as opposed to its usual referent. 

  • To make a short reference to something. 

noun
  • A speaking or notice of anything, usually in a brief or cursory manner. Used especially in the phrase make mention of. 

  • A social media feed, a list of replies or posts mentioning a person. 

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