virtuoso vs superstar

virtuoso and superstar both are nouns.

Word	Noun	Adjective	Verb	Adverb
virtuoso	Yes	Yes	No	No
superstar	Yes	No	No	No

As nouns, virtuoso and superstar are synonyms defined as:

Other synonyms of virtuoso include ace, adept, champion, genius, hotshot, maven, mavin, sensation, star, whiz, whizz, wiz, wizard.

virtuoso (noun)	superstar (noun)
someone who is dazzlingly skilled in any field	someone who is dazzlingly skilled in any field
a musician who is a consummate master of technique and artistry

virtuoso (adjective)	superstar (adjective)
having or revealing supreme mastery or skill