one

one

The Spanish word "one" does not exist; you may mean "uno," which means "one" in English.

Here, 'uno' is used as an indefinite pronoun meaning 'one' in general.

Uno nunca sabe lo que puede pasar.

One never knows what can happen.

Here, 'un' is the masculine singular indefinite article meaning 'a' or 'one' (car).

Tengo un carro rojo.

I have a red car.

Here, 'una' is the feminine singular indefinite article meaning 'a' or 'one' (good friend).

Ella es una buena amiga.

She is a good friend.