In Galician grammar, nouns play a crucial role as they are the words that designate people, places, things, or ideas. They are often accompanied by determiners, such as articles, possessives, or demonstratives, which agree with them in gender and number.

Nouns in Galician are generally marked for two genders: masculine and feminine. However, it is worth mentioning that there are some nouns that have a fixed gender and do not change. Additionally, nouns can also be singular or plural, and they undergo changes in their endings to reflect this.

One interesting feature of Galician nouns is their ability to form augmentatives and diminutives. Augmentatives are formed by adding suffixes such as -ón, -ona, or -ote, and they indicate a larger or stronger version of the noun. Diminutives, on the other hand, are formed with suffixes like -iño, -iña, or -ete, and they indicate a smaller or more endearing version of the noun.

Overall, understanding noun theory in Galician grammar is crucial for learners, as it is the foundation for building sentences and expressing ideas accurately and effectively in the language.