A model (from Middle French modèle//aew), sometimes called a mannequin, is a person who is employed to display, advertise and promote commercial products (notably fashion clothing) or to serve as a subject of works of art.

Modelling ("modeling" in American) is distinguished from other types of public performance, such as an acting, dancing or mime artist, although the boundary is not well defined. Appearing in a movie or a play is almost never considered modelling.

Types of modelling include fashion, glamour, fitness, bikini, fine art, and body-part models. Models are featured in a variety of media formats including books, magazines, movies, newspapers, and TV. Models sometimes are featured in movies (Looker, Tattoo), reality television shows (America's Next Top Model, The Janice Dickinson Modeling Agency), or music videos ("Freedom! '90", "Wicked Game", "Daughters").

A modelling agency is a company that represents a group of models which they call their model board. Model bookers (also called "bookers" or "agents") manage a model's career. Agents help a model find jobs, book jobs, give advice, and email or give copy books and comp cards to various clients they work with (a comp card is a selection of pictures printed on a card, a copy book is a scanned version of a models portfolio). Agents may send models to various clients and schedule modelling interviews (also called go and see or castings).^{[citation needed]}

A person is a being, such as a human, that has certain capacities or attributes constituting personhood, the precise definition of which is the subject of much controversy.^{[vague language]} The common plural of "person", "people", is often used to refer to an entire nation or ethnic group (as in "a people"), so the plural "persons" is often used in contexts which require precision such as philosophical and legal writing.

In ancient Rome, the word "persona" (Latin) or "prosopon" (πρόσωπον: Greek) originally referred to the masks worn by actors on stage. The various masks represented the various "personae" in the stage play, while the masks themselves helped the actor's voice resonate and made it easier for the audience to hear.

In Roman law, the word "persona" became used to refer to a role played in court, and it became established that it was the role rather than the actor that could have rights, powers, and duties, because different individuals could assume the same roles, the rights, powers, and duties followed the role rather than the actor, and each individual could act in more than one role, each a different "person" in law.^{[tortured english][citation needed]}

Katherine Anne "Katie" Couric (born January 7, 1957) is an American journalist and author. She serves as special correspondent for ABC News, contributing to ABC World News, Nightline, 20/20, Good Morning America, This Week and primetime news specials. Starting on September 6, 2012, she will host Katie, a syndicated daytime talk show produced by Disney-ABC Domestic Television. She has anchored the CBS Evening News, reported for 60 Minutes, and hosted Today and reported for Dateline NBC. She was the first solo female anchor of a weekday evening news program on one of the three traditional USA broadcast networks. Couric's first book, The Best Advice I Ever Got: Lessons from Extraordinary Lives was a New York Times best-seller.

As of May 2012, Couric also has a web show for ABC News, entitled Katie's Take, airing weekly on Yahoo.

Couric was born in Arlington, Virginia, the daughter of Elinor Tullie (née Hene), a homemaker and part-time writer, and John Martin Couric Jr., a public relations executive and news editor at The Atlanta Journal-Constitution and the United Press in Washington, D.C. Her mother was Jewish, but Couric was raised Presbyterian. Couric's maternal grandparents, Bert Hene and Clara L. Froshin, were the children of Jewish immigrants from Germany. In a report for Today, she traced her paternal ancestry back to a French orphan who immigrated to the U.S. in the nineteenth century and became a broker in the cotton business.