The noun 'evidence' is a mass noun with no plural form.
The noun 'evidence' is a type of uncountable noun called an aggregate noun, a word representing an indefinite number of elements.
Evidence is both. A piece of evidence would be referring to a single amount.
The noun 'mice' is the plural form of the singular noun 'mouse'.
The noun 'circus' is a singular noun.The plural noun is 'circuses'.
The noun juggler is a singular noun. The plural noun is jugglers.
Statistics is plural, the singular form is statistic.
The word moon is a singular noun. The plural noun is moons.
The noun 'mice' is the plural form of the singular noun 'mouse'.
The singular noun is "louse" and the plural noun is "lice."
"Book" is a noun that has both a singular and plural form: "book" (singular) and "books" (plural).
"Children" is a plural noun. The singular form is "child."
The noun 'circus' is a singular noun.The plural noun is 'circuses'.
The noun juggler is a singular noun. The plural noun is jugglers.
The singular noun is Tuesday.The plural noun is Tuesdays.
The singular noun is trio; the plural noun is trios.
The noun 'orchid' is a singular noun, a word for one.The plural noun is 'orchids'.
"Document" can be both singular and plural. When referring to one piece of written or printed material, it is singular. When referring to more than one piece of written or printed material, it is plural.
The noun mailbox is the singular form; the plural is mailboxes.
Statistics is plural, the singular form is statistic.