Are there masculine and feminine nouns in Spanish?

Spanish does not have grammatical gender assigned to nouns based on whether they are perceived as masculine or feminine.

However, all nouns in Spanish are assigned a grammatical gender: either masculine or feminine. This is determined by the noun itself, not by its meaning or any perceived gender.

Here's how it works:

* Most nouns ending in "-o" are masculine: *el libro* (the book), *el perro* (the dog), *el sol* (the sun)

* Most nouns ending in "-a" are feminine: *la mesa* (the table), *la mujer* (the woman), *la luna* (the moon)

There are exceptions to these rules, and some nouns have irregular gender assignments. For example:

* Some nouns ending in "-a" are masculine: *el mapa* (the map), *el día* (the day)

* Some nouns ending in "-o" are feminine: *la mano* (the hand), *la foto* (the photo)

The gender of a noun determines the form of articles, adjectives, and other words that agree with it in a sentence.

So, while Spanish doesn't have "masculine" and "feminine" nouns in the sense of aligning with gender stereotypes, it does have a grammatical gender system that influences how words are used.