Egyptian capital vs Al Qahira

Egyptian capital and Al Qahira both are nouns.

Word	Noun	Adjective	Verb	Adverb
Egyptian capital	Yes	No	No	No
Al Qahira	Yes	No	No	No

As nouns, Egyptian capital and Al Qahira are synonyms defined as:

Egyptian capital and Al 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 Egyptian capital include Cairo, capital of Egypt, El Qahira.

Egyptian capital (noun)	Al 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