Count nouns and uncount nouns
Count nouns: nouns you can count / has a singular and plural form:
For example: apple, car, dollar, loaf, stamps, chair, book, jobs.
Uncount nouns: nouns that do not have a plural form.
For example: water, money, salt, bread, anger, work, help, news, information.
Usually these words fall into one of four categories: substances, feelings, activities or abstract ideas (such as fun, beauty)