Irregular Nouns That Don’t Change
Not all nouns follow the same rules. Some are exactly the same in their singular and plural forms. The word
sheep, for instance, can mean one woolly animal or many woolly animals. The word
can mean one airplane or many airplanes.
At the same time, some irregular nouns only exist in their plural form. For example, there’s no singular form of
scissors, pants, species, or shorts.