determiner vs identifier

determiner

noun
  • Someone (a sentient agent) who determines; a decider of a disposition. 

  • A member of a class of words functioning in a noun phrase to identify or distinguish a referent without describing or modifying it. 

  • A dependent function in a noun phrase marking the NP as definite or indefinite. This function is usually filled by words in the determinative class but may be filled by other elements such as a genitive pronoun. 

  • Something (some input factor, a nonsentient agent) that determines, or helps someone to determine, something else. 

identifier

noun
  • Someone who identifies; a person who establishes the identity of someone or something. 

  • One who identifies as a particular type or role; one who says and believes that they are a certain thing. 

  • A formal name used in source code to refer to a variable, function, procedure, package, etc. or in an operating system to refer to a process, user, group, etc. 

  • A primary key. 

  • A guidebook that helps determine the specific class of an object (such as a mushroom, herb, fish, bird, drug, or mineral), or its individual identity (such as that of a star). 

  • Something that identifies or uniquely points to something or someone else. 

  • A code that distinguishes a particular element from all other elements in a document. 

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