cite vs specify

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 

specify

verb
  • To state explicitly, or in detail, or as a condition. 

  • To bring about a specific result. 

  • To include in a specification. 

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