world power vs superpower

world power and superpower both are nouns.

Word	Noun	Adjective	Verb	Adverb
world power	Yes	No	No	No
superpower	Yes	No	No	No

As nouns, world power and superpower are synonyms defined as:

world power and superpower: a state powerful enough to influence events throughout the world

Other synonyms of world power include great power, major power, power.

world power (noun)	superpower (noun)
a state powerful enough to influence events throughout the world	a state powerful enough to influence events throughout the world