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"Cuarto" is an adjective which is often translated as "fourth", and "a las tres" is a phrase which is often translated as "at three". Learn more about the difference between "cuarto" and "a las tres" below.
cuarto, el cuarto(
kwahr
-
toh
)An adjective is a word that describes a noun (e.g., the big dog).
a. fourth
Entra al edificio y toma el ascensor al cuarto piso.Enter the building and take the elevator to the fourth floor.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a las tres(
ah
lahs
trehs
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. at three
Entro a trabajar a las ocho de la mañana y salgo a las tres de la tarde.I start work at eight in the morning and finish at three in the afternoon.
b. at three o'clock
El avión salió a las tres de Toronto, así que estará a punto de llegar a Nueva York.The plane left Toronto at three o'clock so it will be about to arrive in New York.
