Nile and Nile River

Nile noun - The world's longest river (4150 miles); flows northward through eastern Africa into the Mediterranean; the Nile River valley in Egypt was the site of the world's first great civilization.

Nile River and Nile are semantically related. In some cases you can use "Nile River" instead a noun "Nile".

Nile River noun - The world's longest river (4150 miles); flows northward through eastern Africa into the Mediterranean; the Nile River valley in Egypt was the site of the world's first great civilization.

Nile and Nile River are semantically related. You can use "Nile" instead a noun phrase "Nile River".