(grammar) A noun which, though singular, refers to a group of things or animals. Examples: a school of fish, a pride of lions.

A noun which refers to something that can be counted. Examples: house, car, bush, point.

(grammar) A noun that denotes something tangible or material, such as a person or place.

(grammar) A noun that denotes an idea, emotion, feeling, quality, generalization, representation or other abstract or intangible concept, as opposed to a concrete item, or a physical object.

A noun that normally cannot be counted.

(grammar) A noun that is morphologically related to a verb and similar to it in meaning; in English, it contrasts with the gerund and the deverbal noun.

(grammar) A noun that denotes an agent that performs the action denoted by the verb from which the noun is derived, such as "rider" derived from "to ride", or "cutter" derived from "to cut".

(grammar) A phrase that has a noun (or indefinite pronoun) as its head or performs the same grammatical function as a noun.

A noun that denotes any member, or all members, of a class; an ordinary noun such as "dog" or "city". In contrast, a proper noun is a single named entity such as "Socrates".

(grammar) A word or phrase that is a noun denoting a particular person, place, organization, ship, animal, event, or other individual entity.