They became man and wife.
- Se convirtieron en marido y mujer.
I went to the hospital to see my wife.
- He ido al hospital a ver a mi mujer.
A woman whose husband is dead is called a widow.
- A una mujer, cuyo marido está muerto, se le llama viuda.
A woman asked me for directions.
- Una mujer me preguntó por una calle.