This is the 489th most frequent Catalan word.
troben
"Troben" means "they find" in English.
Here, 'es troben' is a reflexive verb form used in the present tense to indicate that the friends mutually meet each other.
Els amics es troben al parc per jugar.
The friends meet at the park to play.
In this case, 'troben' functions as the main verb in the sentence and means 'to find' or consider something in a certain way.
Troben el llibre interessant i útil per als seus estudis.
They find the book interesting and useful for their studies.
Here, 'es troben' is used in an impersonal structure to mean 'are located' or 'can be found', serving a passive voice purpose.