This is the 1526th most frequent Catalan word.
bus
Bus: bus.
In this sentence, 'bus' is used to identify the particular vehicle being discussed.
El conductor del bus va ser molt amable.
The bus driver was very kind.
This usage of 'bus' is to indicate the specific public transport vehicle the speaker is waiting for.
Estic esperant el bus a la parada.
I am waiting for the bus at the stop.
Here, 'bus' is used to denote a means of transportation.