quality vs virtue

quality

noun
  • Level of excellence. 

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

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

  • Something that differentiates a thing or person. 

  • 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. 

virtue

noun
  • A particular manifestation of moral excellence in a person; an admirable quality. 

  • A creature embodying divine power, specifically one of the orders of heavenly beings, traditionally ranked above angels and below archangels. 

  • Accordance with moral principles; conformity of behaviour or thought with the strictures of morality; good moral conduct. 

  • Specifically, each of several qualities held to be particularly important, including the four cardinal virtues, the three theological virtues, or the seven virtues opposed to the seven deadly sins. 

  • An inherently advantageous or excellent quality of something or someone; a favourable point, an advantage. 

  • Specifically, moral conduct in sexual behaviour, especially of women; chastity. 

  • The inherent power or efficacy of something (now only in phrases). 

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