designation vs proper noun

designation

noun
  • signification, meaning, for example of a word or phrase. 

  • Selection and appointment for a purpose or office; allotment; direction. 

  • An act or instance of designating; a pointing out or showing; indication. 

  • That which designates; a distinguishing mark or name; distinctive title; appellation. 

proper noun

noun
  • A word or phrase that is a noun denoting a particular person, place, organization, ship, animal, event, or other individual entity. 

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