A plural collective noun refers to a word that describes a group of individuals or things but is used in a plural form. These nouns denote a collection of entities considered as a single unit, but they take a plural verb and can be treated as plural in sentences.
For example, "people" is a plural collective noun because it refers to a group of individuals and is always used in a plural form. Another example is "cattle," which refers to a group of cows or livestock.
In summary, plural collective nouns represent groups but are consistently used in their plural form.