“Singular” means only one. “Plural” means more than one.
The basic rule is to add “s” to make a noun plural.
There are many irregular nouns that add “es”. There are several rules to remember when spelling plural nouns. The rules are based on the letters at the end of the word. They are easiest to remember in categories.
See more for your better understanding:
- Hint: Are you confused yet? The easiest way to handle these is to memorize the short list of nouns that must have es or to just add es to words with consonant o except foreign words.