(5) Now, let’s talk about proper and common nouns. A proper noun is the name of a specific person, place, or thing. Proper nouns always begin with a capital letter.

To form the possessive of a noun that ends in S, AP style has separate rules for proper names and generic nouns. For proper names like James, AP says, add an apostrophe only: He borrowed James’ car.

The syntactically definable category of proper nouns is only a subclass of the orthographically definable class. Many capitalized nouns, e.g. Kodak and Purex, are not members of the syntactically ...