There are numerous ways to compare rivers - by their differences, by their similarities and some of the criteria would be - length, discharge, size, sources, mouth, basin, tributaries, area through which they flow etc. The links below will give you ample details to cover this.
The common noun for Nile is river.
Shenandoah River
The common noun for the proper noun 'Nile' is river.Note: A proper noun is always capitalized.
Nile Crocodiles Fishing Eagles
water
Nile River
the answer is this
Egypt has only one river - the river Nile, the longest river in the world.
Nile River
Shenandoah Canoes were made by Shenandoah Canoe Company in Luray Virginia, part of Shenandoah River Outfitters.
The were next to each other on the Nile River. They needed to trade goods and deal with their common problem of the Nile flooding.
Egypt's Nile River is probably the most significant of these.