A market is one of many varieties of systems, institutions, procedures, social relations and infrastructures whereby parties engage in exchange. While parties may exchange goods and services by barter, most markets rely on sellers offering their goods or services (including labor) in exchange for money from buyers. It can be said that a market is the process by which the prices of goods and services are established.

For a market to be competitive, there must be more than a single buyer or seller. It has been suggested that two people may trade, but it takes at least three persons to have a market, so that there is competition on at least one of its two sides. However, competitive markets rely on much larger numbers of both buyers and sellers. A market with single seller and multiple buyers is a monopoly. A market with a single buyer and multiple sellers is a monopsony. These are the extremes of imperfect competition.

Markets vary in form, scale (volume and geographic reach), location, and types of participants, as well as the types of goods and services traded. Examples include:

Malcolm McCormick (born January 19, 1992), known by his stage name Mac Miller (previously Easy Mac), is an American rapper from Pittsburgh, Pennsylvania. He is signed to Rostrum Records and released his debut album Blue Slide Park on November 8, 2011.

Malcolm McCormick was born on January 19, 1992, the son of an architect and a photographer, and raised in the Point Breeze part of Pittsburgh, Pennsylvania. His father is Christian and his mother is Jewish; Miller was raised Jewish and had a Bar Mitzvah. Before attending Taylor Allderdice High School, Miller attended Winchester Thurston School. In high school, Miller decided to focus on his hip-hop career, later noting, "Once I hit 15, I got real serious about it and it changed my life completely ... I used to be into sports, play all the sports, go to all the high school parties. But once I found out hip-hop is almost like a job, that's all I did." Miller, a self-taught musician, plays piano, guitar, drums, and bass.

Before embarking on a solo career, Miller was part of rap group The Ill Spoken together with fellow Pittsburgh rapper, Beedie. The Ill Spoken released the mixtape How High in 2008. Prior to changing his name to Mac Miller, he was known as EZ Mac and released the mixtape But My Mackin Ain't Easy in 2007 at 15 years old. In 2009 Mac Miller released two mixtapes The Jukebox: Prelude to Class Clown and The High Life before getting signed to Rostrum Records.

Malcolm Stevenson "Steve" Forbes, Jr. (born July 18, 1947) is an American publishing executive who was twice a candidate for the nomination of the Republican Party for president. He is the editor-in-chief of business magazine Forbes as well as president and chief executive officer of its publisher, Forbes Inc. He was a Republican candidate in the U.S. Presidential primaries in 1996 and 2000. He is the son of longtime Forbes magazine publisher Malcolm Forbes and the grandson of that publication's founder, B.C. Forbes.

Forbes was born in Morristown, New Jersey, the son of Roberta Remsen (née Laidlaw) and Malcolm Forbes. He is married to Sabina Beekman, and they have five daughters; Sabina, Roberta, Catherine, Moira, and Elizabeth. Forbes attended Far Hills Country Day School. He graduated cum laude in 1966 from Brooks School in North Andover, Massachusetts, and was in the Princeton class of 1970. While at Princeton, Forbes founded his first magazine, Business Today, with two other students. Business Today is currently the largest student-run magazine in the world.