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Quite simply, a singular noun is a noun that refers to only one person, one place, one thing, or one idea. If you look at one object and name it, you have an example of a singular noun. For example there is one lamp on my bookcase and one chair at my desk.
Grammar codes. Nouns. [C] countable nouns that are used with a or an or a number and have a plural: car, soldier. [U] uncountable nouns that cannot be used with a or an or a number and have no plural: happiness, pasta. [singular] nouns that are used with a, an, or the but are never used in the plural: babble, halt. [plural] nouns that are used only in the plural and always take a plural verb: cattle, surroundings. [often plural][usually plural] nouns that can be used in the singular but are often or usually plural: boundary, fee. Verbs. [I] intransitive verbs that have no direct object: He paused for a moment.