I'm sorry but there isn't an easy way to look at this. Some are interchangeable (north/northern bank of the river). Some are not (northern accent, northern climate).
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Tung QuocHi,
North (adj) and northern (adj) are interchangeable? If not, how can we distinguish them clearly?
Ex: North London = Northern London? (1)
The north bank of the river. =The northern bank of the river? (2)
The north slopes of the mountains