In Catalan grammar, nouns can be classified as countable or uncountable. Countable nouns refer to items that can be counted, such as people, animals, or objects. They have both singular and plural forms. On the other hand, uncountable nouns are used to describe things that cannot be counted or separated into individual units, such as liquids, gases, or abstract concepts. Some common examples include aigua (water), aire (air), or amor (love). In the following exercises, you will practice identifying and using countable and uncountable nouns in Catalan sentences.