rock is a singular noun there is no doubt about that if you think it is a plural noun you really need to take your grammer class over again
Yes, the word 'boulder' is a noun; a singular, common, concrete noun; a word for a large rock; a word for a thing.
Yes. Hay is a singular noun. A Singular noun means one item only. So technically, hay is a singular noun.
The noun 'theory' is a singular noun. The plural noun is 'theories'.
The noun 'mice' is the plural form of the singular noun 'mouse'.
Yes the word question is a singular noun. The plural noun is questions.
Yes, the word 'moraines' is a noun, the plural form of the singular noun 'moraine', a word for an accumulation of soil and rock deposited by a glacier; a word for a thing.
The noun mailbox is the singular form; the plural is mailboxes.
The noun school is the singular form.The plural noun is schools.
The noun 'fun' is a singular non-count noun, it has no plural form.
Feet is a plural noun. Foot is a singular noun.
The noun juggler is a singular noun. The plural noun is jugglers.
Yes, the word 'asteroid' is a singular, common, concrete noun; a word for a mass of rock that moves through space, a word for a thing.