A noun is a word that names a person, animal, or thing. Common nouns name persons, animals, or things of which there is not just one example, (bridge, girl, sugar, unhappiness), whereas proper nouns name specific people, places, events, institutions, magazines, books, plays, and so forth, and are written with initial capital letters(Billy, Asia, Easter, Hamlet). Concrete nouns refer to physical things and living beings (bread, woman), and abstract noun to concepts (greed, unhelpfulness). Some nouns are concrete and abstract in different meanings, e.g. cheek is concrete when it refers to a part of the face and abstract when it means ‘impertinence’.
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