Big Apple
"Big Apple" is a nickname for New York City. It was first popularized in the 1920s by John J. Fitz Gerald, a sports writer for the "New York Morning Telegraph". Its popularity since the 1970s is due in part to a promotional campaign by the New York tourist authorities.
New York metropolitan area
New York City's most important economic sector lies in its role as the headquarters for the U.S. financial industry, metonymously known as "Wall Street". Anchored by Wall Street, in the Financial District of Lower Manhattan, New York City has been called both the most economically powerful city and the leading financial center of the world, and the city is home to the world's two largest stock exchanges by total market capitalization, the New York Stock Exchange and NASDAQ. The city's securities industry, enumerating 163,400 jobs in August 2013, continues to form the largest segment of the city's financial sector and an important economic engine, accounting in 2012 for 5 percent of the city's private sector jobs, 8.5 percent (US$3.8 billion) of its tax revenue, and 22 percent of the city's total wages, including an average salary of US$360,700.