Big Apple
"The Big Apple" was popularized as a name for New York City by John J. Fitz Gerald in a number of horse-racing articles for the "New York Morning Telegraph" in the 1920s. The earliest of these was a casual reference on 3rd May, 1921:
Caput Mundi
New York City, the most populous city in the United States, is sometimes described by the Latin phrase ""Novum Caput Mundi"" ("New Capital of the World"); or more commonly by the English phrase, "Capital of the World". A leading global city, New York exerts a significant impact upon commerce, finance, media, art, fashion, research, technology, education, and entertainment, its fast pace defining the term "New York minute". Home to the headquarters of the United Nations, New York is an important center for international diplomacy and has been described as the cultural and financial capital of the world, despite not being the modern capital of the United States or even of New York State. As many as 800 languages are spoken in New York City, making it the most linguistically diverse city in the world.