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"Treinta" is a noun which is often translated as "thirty", and "son las siete" is a phrase which is often translated as "it's seven o'clock". Learn more about the difference between "treinta" and "son las siete" below.
el treinta(
treyn
-
tah
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
2. (number)
b. thirtieth (in dates)
El cumpleaños de mi padre es el treinta de noviembre.My father’s birthday is on the thirtieth of November.
son las siete(
sohn
lahs
syeh
-
teh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. it's seven o'clock
Son las siete. Tenemos que irnos ya mismo o perderemos el tren.It's seven o'clock. We need to leave right now or we'll miss the train.
