identifier vs quality

identifier

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

  • 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. 

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

  • 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). 

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

quality

noun
  • Something that differentiates a thing or person. 

  • The third step in OPQRST where the responder investigates what the NOI/MOI feels like. 

  • A newspaper with relatively serious, high-quality content. 

  • Level of excellence. 

  • The degree to which a man-made object or system is free from bugs and flaws, as opposed to scope of functions or quantity of items. 

  • In a two-phase liquid–vapor mixture, the ratio of the mass of vapor present to the total mass of the mixture. 

adj
  • Being of good worth, well made, fit for purpose; of high quality. 

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