This is the 500th most frequent Slovenian word.
trenerja
The Slovenian word "trenerja" means "coach" or "trainer" in English.
Here, 'trenerja' is the genitive case form of 'trener', used to indicate possession or relation (a book for the coach).
Kupil sem knjigo za trenerja.
I bought a book for the coach.
In this sentence, 'trenerja' is the accusative case of the noun 'trener' (coach), indicating the direct object of the verb 'srečal' (I met).
Sem srečal trenerja na stadionu.
I met the coach at the stadium.
In this example, 'trenerja' is also in the accusative case, serving as the direct object of the verb 'vprašal' (I asked).