What is the difference between a common noun, proper noun, possessive noun and pronoun?

These sites will give you all that information.

http://www.arts.uottawa.ca/writcent/hypergrammar/nouns.html

http://grammar.ccc.commnet.edu/grammar/nouns.htm

To understand the differences between common nouns, proper nouns, possessive nouns, and pronouns, let's break down each of these terms.

1. Common Noun: A common noun refers to a general, non-specific person, place, thing, or idea. It represents a class or category of objects. For example, "dog," "city," and "book" are common nouns because they can be used to describe any dog, city, or book.

2. Proper Noun: A proper noun, on the other hand, refers to a specific person, place, or thing. It is capitalized because it identifies a particular individual or entity. For instance, "London," "Michael," and "Harry Potter" are proper nouns because they point to specific locations, people, or fictional characters.

3. Possessive Noun: A possessive noun shows ownership or possession of something. It is formed by adding an apostrophe (') and an "s" to the end of a noun. For example, "Sarah's car" or "the dog's bone" are examples of possessive nouns, indicating that the car belongs to Sarah and the bone belongs to the dog.

4. Pronoun: A pronoun is a word used to replace a noun or noun phrase to avoid repetition. Pronouns are used to refer back to a noun previously mentioned or known in the conversation. For instance, instead of repeatedly saying "Sarah," we can use the pronoun "she" to refer to Sarah. Examples of pronouns include "he," "she," "it," "they," and "we."

To determine the type of noun being used, you can identify whether it is a common noun by assessing if it represents a general idea, whereas a proper noun will be specific and capitalized. A possessive noun will indicate ownership, while a pronoun will be used to replace a noun.