This is the 1195th most frequent Polish word.
żoną
"Żoną" means "wife" in English.
Here, 'żona' is used in the nominative case to refer to one's wife.
Moja żona jest bardzo miła.
My wife is very kind.
In this sentence, 'żoną' is used in the instrumental case, as it's accompanied by the preposition 'z', meaning 'with'.
Rozmawiałem z żoną o planach na weekend.
I talked with my wife about plans for the weekend.
Here, 'żonie' is in the dative case, used to indicate the recipient of the action, 'helping' in this context.