In English, we distinguish between singular and plural.
この名詞は単数で使われることが多い。
This noun is often used in the singular.
Grammatical term specifically for the singular number, as opposed to plural (複数). Used in linguistics and language learning contexts.
See also: 複数
「child」の単数は「child」、複数は「children」です。
The singular of 'child' is 'child', and the plural is 'children'.
This noun is in the singular form.
This word is often used in the singular.
third-person singular
second-person singular