The full English name of the United States is the United States of America.

Both US and USA are English abbreviations of the United States, and US is the abbreviation of the United States, which is directly translated into "America". USA is the abbreviation of the full name of the United States of America, but its application scope is far less extensive than that of the United States.

America is the most commonly used sports event. Almost all international sports events management organizations, including the International Olympic Committee, have strict regulations, and abbreviations in various countries must use ISO standards.