Yes. Hay is a singular noun. A Singular noun means one item only. So technically, hay is a singular noun.
The noun 'team' is a singular noun; the plural noun is 'teams'.Examples:A team of mules pulled a wagon load of hay. (singular)Both teams are on the field and ready to play. (plural)
The noun ox is the singular form; the plural form is oxen.
We saw a team of oxen pulling a farmer's wagon of hay.
Hay mucho -masculine singular Hay mucha -feminine singular Hay muchos -masculine plural Hay muchas -feminine plural
The noun 'theory' is a singular noun. The plural noun is 'theories'.
Hay is a noun.
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.
The noun mailbox is the singular form; the plural is mailboxes.
Feet is a plural noun. Foot is a singular noun.
The noun juggler is a singular noun. The plural noun is jugglers.
The noun school is the singular form.The plural noun is schools.