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"A las ocho" is a phrase which is often translated as "at eight", and "cuarto" is an adjective which is often translated as "fourth". Learn more about the difference between "a las ocho" and "cuarto" below.
a las ocho(
ah
lahs
oh
-
choh
)A phrase is a group of words commonly used together (e.g., once upon a time).
b. at eight o'clock
El vuelo a Buenos Aires sale a las ocho de la mañana.The flight to Buenos Aires departs at eight o'clock in the morning.
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).