This is the 901st most frequent Romanian word.
kievul
"Kievul" in Romanian refers to "the Kiev," which is the capital city of Ukraine.
The word 'Kievul' acts as the subject of the sentence and refers specifically to Kiev, the capital city, in a nominative definite form.
Kievul este capitala Ucrainei.
Kiev is the capital of Ukraine.
In this sentence, 'Kievului' is in the genitive case, showing possession ('Kiev's history').
Istoricul Kievului este foarte bogat.
The history of Kiev is very rich.
Here, 'Kievul' functions as the direct object of the verb 'a vizitat' and is in the accusative case, denoting that Kiev was the entity visited.