noun vs pronoun

noun

noun
  • A word that functions as the name of a specific object or set of objects, such as person, animal, place, thing, phenomenon, substance, quality, or idea; one of the basic parts of speech in many languages, including English. 

  • An object within a user interface to which a certain action or transformation (i.e., verb) is applied. 

verb
  • To convert a word to a noun. 

pronoun

noun
  • A type of word that refers anaphorically to a noun or noun phrase, but which cannot ordinarily be preceded by a determiner and rarely takes an attributive adjective. 

  • Any of the pronouns by which a person prefers to be described, typically reflecting gender identity. 

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