noun vs qualifier

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. 

qualifier

noun
  • A word or phrase, such as an adjective or adverb, that describes or characterizes another word or phrase, such as a noun or verb; a modifier; that adds or subtracts attributes to another. 

  • A preliminary stage of a competition. 

  • One who qualifies for something, especially a contestant who qualifies for a stage in a competition. 

  • A marker that qualifies or modifies another code element. 

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