This is the 3678th most frequent Polish word.
joannę
"Joannę" is the accusative form of "Joanna," a Polish feminine name equivalent to "Joanna" in English.
The word 'Joannę' is the accusative case of the proper noun 'Joanna', used here as the direct object of the verb 'widziałem' (saw).
Widziałem Joannę w parku.
I saw Joanna in the park.
The word 'Joanny' is the genitive case of the proper noun 'Joanna', used here to denote possession.
Mam książkę od Joanny.
I have a book from Joanna.
The word 'Joanny' is the genitive case of the proper noun 'Joanna', used after the preposition 'do' (to).