The word 'dollar' is usually associated with the name of the currency used in the USA.
(There are other countries that use the word 'dollar' in their currency. The most well known are Canada and Australia, but there are 26 other countries that use the word dollar in their currency, these are:-
Antigua and Barbuda
Bahamas
Barbados
Belize
Brunei
Dominica
El Salvador
Fiji
Grenada
Guyana
Jamaica
Kiribati
Liberia
Namibia
Nauru
New Zealand
St Kitts and Nevis
St Lucia
St Vincent and the Grenadines
Singapore
Solomon Islands
Surinam
Taiwan
Trinidad and Tobago
Tuvalu
Zimbabwe)