Plurals are used to indicate the number of items in a given group. They are composed of two or more words that form a grammatically correct noun phrase and agree in number, gender, and case with the noun.
Plurals are a form of a noun to show the quantity of that noun is more than one. There are different types of plurals used for proper nouns, common nouns, collective nouns, and mass nouns.
Plurals are commonly used for multiple quantities of a countable noun or entity such as articles, people, books, and cats.
The plurals used in the English language could be regular or irregular, and they include "s", "es", "ies", “ve”, “ves”, “ze” and “en.” For example, the singular form of an ox is an ox but the plural form of an ox is oxen.