Noun- A noun is a person, place, thing, quality, feeling, or idea. Nouns are often but not always following an article (a, an, the). 

Proper Nouns- are words used as names for unique individuals, events, or places, often capitalized. Examples: Lincoln, New York, Round Table Pizza. 

Concrete Nouns- are specific words that point to a definite item. TV, for example, names a general class, prime time TV names a narrower class, and LOST: Season 4 is even more specific. 

Abstract Nouns- refer to qualities and broader ideas. Example: love, thing, peace, and children. 

Collective Nouns- name a class or group. Example: jury, committee, audience, crowd, class, troop, family, and couple. These words are singular nouns representing a group as one single unit. 

Possessive Nouns- usually indicate ownership. For example, Dustin’s computer, or the tree’s roots. Ownership is often loosely implied. If you’re not sure whether a noun is possessive or not, try turning it into an of phrase: the computer of Dustin, the roots of the tree.