capital of Liberia vs Liberian capital

capital of Liberia and Liberian capital both are nouns.

Word	Noun	Adjective	Verb	Adverb
capital of Liberia	Yes	No	No	No
Liberian capital	Yes	No	No	No

As nouns, capital of Liberia and Liberian capital are synonyms defined as:

capital of Liberia and Liberian capital: the capital and chief port and largest city of Liberia

Other synonyms of capital of Liberia include Monrovia.

capital of Liberia (noun)	Liberian capital (noun)
the capital and chief port and largest city of Liberia	the capital and chief port and largest city of Liberia