Look at the list of nouns below:
| A | B |
|---|---|
| souvenir | souvenirs |
| church | churches |
| box | boxes |
| key | keys |
| family | families |
Nouns in Column A refer to only one; therefore, they are singular. A noun is in the singular form if it refers to only one object or one group of objects.
Nouns in Column B refer to many or more than one; therefore, they are plural. A noun is in the plural form if it refers to more than one object or group of objects.