byway

by|way /b'aɪweɪ/ (byways)
1 [N-COUNT] usu pl
A byway is a small road which is not used by many cars or people.
...the highways and byways of America.
2 [N-COUNT] usu pl, usu N of n
The byways of a subject are the less important or less well known areas of it.
My research focuses on the byways of children's literature.