* Countable nouns: These nouns can be counted and have plural forms. Examples:
* Singular: cat, book, chair
* Plural: cats, books, chairs
* Uncountable nouns: These nouns represent things that cannot be counted individually. They usually don't have a plural form. Examples:
* Water, furniture, advice, happiness, information
Here's where the statement is misleading:
* Nouns that have a plural form do not always change in meaning. For example, the noun "fish" can be both singular and plural.
* Some uncountable nouns can be used in a countable way with a slight change in meaning. For example: "I have three coffees" (referring to three individual cups of coffee).
Therefore, it's not accurate to say all nouns with plural forms have a different meaning. They often simply indicate more than one of the same thing.