capital of Egypt vs El Qahira

capital of Egypt and El Qahira both are nouns.

Word	Noun	Adjective	Verb	Adverb
capital of Egypt	Yes	No	No	No
El Qahira	Yes	No	No	No

As nouns, capital of Egypt and El Qahira are synonyms defined as:

capital of Egypt and El Qahira: the capital of Egypt and the largest city in Africa; a major port just to the south of the Nile delta; formerly the home of the Pharaohs

Other synonyms of capital of Egypt include Al Qahira, Cairo, Egyptian capital.

capital of Egypt (noun)	El Qahira (noun)
the capital of Egypt and the largest city in Africa; a major port just to the south of the Nile delta; formerly the home of the Pharaohs	the capital of Egypt and the largest city in Africa; a major port just to the south of the Nile delta; formerly the home of the Pharaohs