A dollar is the unit of currency in several countries, the USA, AUSTRALIA; TW.... What is the exchange rate between the US$ and the NTWD ?
A plural is the form of a noun, pronoun, determiner, adjective or verb used to refer to more than one thing (dollar)The verb is in the plural(=dollars were).
A plural word is a word in or having this form.
Plural means consisting of more than one thing or consisting of different kinds of things:-eg:-million dollars.Some nouns have no plural forms (money);"More than +singular" are to be treated as singular.We often use "a piece" and "some pieces" to count them so as to remain to have no plural forms.Some nouns are always plural:-(riches, savings;but not money)
This noun (million-dollars) can be followed by a singular or plural verb.