This is the 6965th most frequent Russian word.
ариана
Ariana (Ариана) is a feminine given name, often of Greek or Latin origin, meaning "most holy" or "pure."
Here, Ариана is in the accusative case (Арияну), as it serves as the direct object of the verb "видел" (saw).
Я видел Арияну в магазине.
I saw Ariana in the store.
Here, Ариана is used as a proper noun, a name, in the nominative case, functioning as the subject of the sentence.
Ариана готовит ужин.
Ariana is cooking dinner.
In this sentence, Ариана is in the dative case (Ариане), indicating the indirect object of the verb "подарили" (gave).