Nouns play a fundamental role in Danish grammar. They serve as the building blocks of sentences and carry important information about things, people, and concepts. In Danish, nouns are inflected to show gender, number, and case.

First, Danish nouns are classified into two genders: common (n-common) and neuter (n-neuter). The choice of gender is often arbitrary and does not necessarily reflect the actual gender of the noun. Additionally, some nouns have irregular forms, making them exceptions to the general rule.

Next, nouns can be either singular or plural. Danish plural nouns often undergo changes in their formation. This can involve adding an -e, -er, -r, or -en ending, changing a vowel, or undergoing a complete spelling change.

Finally, Danish nouns can be used in different grammatical cases, including the nominative, genitive, and dative case. The genitive case is used to show possession, while the dative case indicates indirect object or recipient of an action.

Understanding the theory behind Danish nouns is essential for constructing sentences correctly and conveying meaning accurately in written and spoken Danish.