Doha vs capital of Qatar

Doha and capital of Qatar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Doha	Yes	No	No	No
capital of Qatar	Yes	No	No	No

As nouns, Doha and capital of Qatar are synonyms defined as:

Other synonyms of Doha include Bida, El Beda.

Doha (noun)	capital of Qatar (noun)
the capital and chief port of Qatar	the capital and chief port of Qatar