Solomon Islands vs Honiara

Solomon Islands and Honiara both are nouns.

Word	Noun	Adjective	Verb	Adverb
Solomon Islands	Yes	No	No	No
Honiara	Yes	No	No	No

Solomon Islands (noun)	Honiara (noun)
the southern Solomon Islands that since 1978 form an independent state in the British Commonwealth	national capital of Solomon Islands
the northernmost islands are part of Papua New Guinea; the remainder form an independent state within the British Commonwealth