It is trowsus in north Wales, but trwser in south Wales.
If nanna means 'grandmother' it's mam-gu [mam-gee] in south Wales and nain ['nine'] in north Wales.
If 'nana' means 'grandmother', it is 'nain' in north Wales and 'mam-gu' in the south.
The proper adjective for Wales is Welsh.
Cymru
It is trowsus in north Wales, but trwser in south Wales.
taid in North Wales; tad-cu in South Wales.
In North Wales: taid; in South Wales: tad-cu.
In North Wales: taid; in South Wales: tad-cu.
Welsh is spoken in both Wales and Patagonia, in Argentina.
Mamgu (usually in South Wales) or Nain (in North Wales)
MamguIn south Wales mam-gu; in north Wales nain.
North Wales = nain South Wales = mam gu
The majority of Welsh speakers are in Gwynedd, North Wales (62.5%+ fluent), especially in the Caernarfon area where roughly 90% are Welsh-speaking.The divide is more obvious from East - West Wales, in the western counties are in the 40%+ area of Welsh speakers, the eastern counties are usually under 40% Welsh speakers.
In South Wales, mam-gu; in North Wales. nain.
The seat of the Welsh Assembly is Cardiff. The capital of the UK is London.
To keep the Welsh out!