they are siblings
They are brothers.
El contador y el cajero son hermanos.
The accountant and the cashier are brothers.
Mario y Luigi son hermanos.
Mario and Luigi are brothers.
Mi padre y mi tío son hermanos.
My father and my uncle are brothers.
Son hermanos, pero no se parecen.
They’re siblings, but they don’t look alike.
Carla, Sara y Marc son hermanos.
Carla, Sara and Marc are siblings.
Ustedes dos son hermanos, ¿no?
You two are siblings, aren't you?