This is the 3544th most frequent Polish word.
artura
"Artura" is the genitive or accusative form of "Artur," a Polish male given name (Arthur in English).
Artura is in a context requiring the genitive case due to the verb's argument structure.
Pomyśl o Artura, gdy będziesz to robić.
Think of Artur when you do it.
Artura is the accusative case of Artur, used as it is the direct object of the sentence.
Widziałem Artura na ulicy wczoraj.
I saw Artur on the street yesterday.
Artura is the genitive case of Artur, used to express possession or associations.