never-never land vs dreamworld

never-never land and dreamworld both are nouns.

Word	Noun	Adjective	Verb	Adverb
never-never land	Yes	No	No	No
dreamworld	Yes	No	No	No

As nouns, never-never land and dreamworld are synonyms defined as:

never-never land and dreamworld: a pleasing country existing only in dreams or imagination

Other synonyms of never-never land include dreamland.

never-never land (noun)	dreamworld (noun)
a pleasing country existing only in dreams or imagination	a pleasing country existing only in dreams or imagination