This is the 3884th most frequent Catalan word.
camions
Trucks.
Here, 'camions' is used as the subject of the sentence, referring to trucks in general as a collective entity.
Els camions transporten mercaderies a llargues distàncies.
Trucks transport goods over long distances.
In this case, 'camions' denotes multiple individual trucks observed on the road.
Ahir vaig veure molts camions a la carretera.
Yesterday I saw many trucks on the road.
Here, 'camions' refers to specific trucks owned by a particular company, conveying possession.