COZ
Narrow is used in the contexts of narrow roads or streets or a narrow-minded person. I guess narrow is used more figuratively and thin is used in physical contexts (thin body type, thin hair, thin atmosphere)
Spaghetti is thin and narrow; apply the sauce wide and thick.
A thin narrow strip of wood is either a lath or a slat.
Narrow, thin leaves have lower pressure under water.
thin
The opposite of narrow(thin) is wide.
No, they are synonyms
thin, small, bony
Slender
The word narrow implies long and thin, as does slender.
reach your thin fingers into narrow places
narrow sparrow