fairyland vs fantasy world

fairyland and fantasy world both are nouns.

Word	Noun	Adjective	Verb	Adverb
fairyland	Yes	No	No	No
fantasy world	Yes	No	No	No

As nouns, fairyland and fantasy world are synonyms defined as:

fairyland and fantasy world: something existing solely in the imagination (but often mistaken for reality)

Other synonyms of fairyland include phantasy world.

fairyland (noun)	fantasy world (noun)
something existing solely in the imagination (but often mistaken for reality)	something existing solely in the imagination (but often mistaken for reality)
the enchanted realm of fairies