This is the 329th most frequent Catalan word.
troba
"Troba" in Catalan means "finds" (third-person singular form of the verb "trobar").
Here, 'es troba' is the reflexive form of the verb 'trobar'. It is used to indicate that the subject 'meets up' with others.
Ella sempre es troba amb els seus amics els divendres.
She always meets up with her friends on Fridays.
In this context, 'trobes' is the second person singular present form of 'trobar', used in a more abstract sense meaning 'to think' or 'to feel' about something.
Què trobes d'aquest llibre?
What do you think of this book?
In this sentence, 'troba' is the imperative form of the verb 'trobar', meaning 'to find'. It is used here to give a command or request.