Proper Nouns: Nouns that are used to name a person, place or thing specifically are called a proper noun. Proper nouns always begin with a capital letter.
Common nouns: Common nouns are those nouns that refer to a generic item, group or place. This means that, unlike proper nouns, they are not used to identify specific people, places or objects. Common nouns are not capitalised unless they appear at the beginning of a sentence.
Singular nouns: These are words that are used to name a single person, place, animal, bird or object.
Plural nouns: Plural nouns refer to a number of people, places, animals or things. Nouns are made plural by adding an ‘s’ or ‘es’ or ‘ies’ or ‘ves’ to the existing root word. Nouns that end with an ‘s’ remain the same. Some nouns remain the same in both their singular and plural forms, and some others have totally different spelling.
Countable nouns: nouns that can be counted or measured.
Uncountable nouns are those nouns that cannot be counted. This category of nouns includes both concrete and abstract nouns.