By addind -s or -es (if there is already an s) at the end of a noun it becomes plural. however, some plural nouns are irregular, here are the most common irregular nouns and their endings:
Irregular plural nouns
By addind -s or -es (if there is already an s) at the end of a noun it becomes plural. however, some plural nouns are irregular, here are the most common irregular nouns and their endings: