juggler vs performer

juggler and performer both are nouns.

Word	Noun	Adjective	Verb	Adverb
juggler	Yes	No	No	No
performer	Yes	No	No	No

As nouns, performer is a hypernym of juggler; that is, performer is a word with a broader meaning than juggler:

juggler: a performer who juggles objects and performs tricks of manual dexterity
performer: an entertainer who performs a dramatic or musical work for an audience

Other hypernyms of juggler include performing artist.

juggler (noun)	performer (noun)
a performer who juggles objects and performs tricks of manual dexterity	an entertainer who performs a dramatic or musical work for an audience