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"A las doce" is a phrase which is often translated as "at twelve", and "cuarto" is an adjective which is often translated as "fourth". Learn more about the difference between "a las doce" and "cuarto" below.
a las doce(
ah
lahs
doh
-
seh
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. at twelve
¿Quieres quedar a las doce para comer, o es demasiado temprano para ti?Do you want to meet at twelve for lunch, or is it too early for you?
b. at twelve o'clock
¿A qué hora sale tu avión? - A las doce.What time does your plane leave? - At twelve o'clock.
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).