1. Common Nouns: General names of people, places, or things (e.g., dog, city, chair).
2. Proper Nouns: Specific names of people, places, or things (e.g., Fido, London, Eiffel Tower).
3. Concrete Nouns: Things that can be touched or perceived by the senses (e.g., table, flower, music).
4. Abstract Nouns: Ideas, qualities, or concepts that cannot be touched (e.g., love, justice, happiness).
5. Collective Nouns: Names for a group of people, animals, or things (e.g., team, herd, flock).
6. Count Nouns: Nouns that can be counted (e.g., two apples, three books).
7. Mass Nouns: Nouns that cannot be counted individually (e.g., water, sand, air).
8. Compound Nouns: Nouns formed by combining two or more words (e.g., armchair, firefly, bedroom).