vs
QUICK ANSWER
"Cuarenta" is an adjective which is often translated as "forty", and "son las once" is a phrase which is often translated as "it's eleven o'clock". Learn more about the difference between "cuarenta" and "son las once" below.
cuarenta()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
son las once()
A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. it's eleven o'clock
Son las once. La reunión empieza dentro de media hora.It's eleven o'clock. The meeting will start in half an hour.