There are several types of nouns in English, and the different types of nouns obey different rules.

  • Concrete nouns: common nouns and proper nouns
  • Abstract nouns
  • Collective nouns
  • Compound nouns
  • Countable nouns
  • Uncountable nouns

Concrete Nouns (exist physically)
There are two categories of concrete nouns: 

Common Nouns :
People, places and things in general.
Examples: cat, dog, boy, girl, house, bag, suitcase, hotel, beach, towel, etc.

Proper Nouns:
Names of specific people, places or things.
Examples: John, Julie, Queen Elizabeth, London, The Eiffel Tower, The Ritz Hotel, etc.
Rule Proper nouns always begin with a capital letter.

Abstract Nouns (do not exist physically)
Abstract nouns are ideas, concepts and feelings that have no physical existence.
Examples: beauty, courage, liberty, patience, strength, truth, sadness, etc.

Collective Nouns 
Collective nouns are names for a group of individuals, animals, places and things.
Examples: a board of directors, a herd of elephants, a bunch of keys, a range of mountains, etc.

Compound Nouns 
Compound nouns (or compound words) result from the merging of two or more words.
Examples: orange juice, washing machine, toothpaste, notebook, mother-in-law, etc.

Countable Nouns 
Countable nouns refer to individual objects, people, places and things that can be counted.
Examples: books, houses, Americans, cats, dogs, streets, shops, cookies, etc.

Uncountable Nouns 
Uncountable or mass nouns are substances, concepts, information, materials, etc. which are not individual objects and cannot be counted. They have no plural form.
Examples: milk, meat, wood, entertainment, hope, courage, work, etc.