This is the 697th most frequent Portuguese word.
esposa
Wife.
Here, 'esposa' is used as a noun denoting 'my wife' in a sentence illustrating a personal relationship.
Minha esposa adora passear no parque.
My wife loves walks in the park.
'Esposa' serves as a noun referring to the wife of someone's brother, employing possessive case in the structure.
A esposa do meu irmão é muito gentil.
My brother's wife is very kind.
In this example, 'esposa' is the noun 'wife', here used to indicate a partner in a familial discussion.