Proper name

A distinction is normally made in current linguistics between proper nouns and proper names. By this strict distinction, because the term noun is used for a class of single words (tree, beauty), only single-word proper names are proper nouns: Peter and Africa are both proper names and proper nouns; but Peter the Great and South Africa, while they are proper names, are not proper nouns. The term common name is not much used to contrast with proper name, but some linguists have used it for that purpose. While proper names are sometimes called simply names, this term is often used more broadly: "An earlier name for tungsten was wolfram." Words derived from proper names are occasionally called proper adjectives (or proper adverbs, and so on), but not in mainstream linguistic theory. Not every noun phrase that refers to a unique entity is a proper name. For example, chastity is a common noun even though chastity is considered a unique abstract entity (constrasted with the personal name Chastity, which is a proper name).