"barm cakes" (soft round bread rolls which meat/chips can be placed to make a "butty" or "chip barm") seems to be very specific to parts of Manchester & Bolton. I've heard them called "tea cakes" elsewhere.
Others?
A particular type of large barm was referred to as an 'oven bottom' in Burnley.
They seem to use 'tea cakes' in Hebden Bridge.
In Coventry, we used to call them 'batches'. I asked for a 'chip batch' when I first moved here and the chip shop owner looked at me as though I was from another planet!
In Yorkshire, 'while' means 'until'. A bit confusing if a driving instructor from elsewhere is teaching someone from Yorkshire to drive - "Wait while the lights are on red, then go"!
'Offcumden' is a great local word used to describe people like me who moved here from elsewhere. Apparently, if your family haven't lived here for about 100 years, then you are not considered a proper local! (These days, about 75% of the people who live here fall into that category!)