Simplify the following text for a Grade 7 native English-speaking person.
Original: The abbey church , although legally a cathedral church , differs in certain particulars from most of the other cathedrals in England : it is also used as a parish church , of which the dean is rector .
Simplified: The church , although legally a cathedral , differs in certain ways from most of the other cathedrals in England . It is also used as a parish church , of which the Dean is rector .