What is a proper plural?

Answer 1

A proper noun is the name of a specific person, place, or thing. A proper plural noun is the plural form of a proper noun. Examples:

There are a lot of John Waynes in this world, named after the actor John Wayne.

There are 34 cities or towns in the world named Albany; 28 Albanys are in the US.

How many should we order? Get six Whoppers and six Cokes.

Answer 2

A proper plural refers to the plural form of a proper noun, which is a specific name used for an individual person, place, or organization. For example, the proper plural of "cat" is "cats," and the proper plural of "Mr. Smith" is "the Smiths."