Bart vs aristocrat

Bart and aristocrat both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bart	Yes	No	No	No
aristocrat	Yes	No	No	No

As nouns, aristocrat is a hypernym of Bart; that is, aristocrat is a word with a broader meaning than Bart:

Bart: a member of the British order of honor; ranks below a baron but above a knight
aristocrat: a member of the aristocracy

Other hypernyms of Bart include blue blood, patrician.

Bart (noun)	aristocrat (noun)
a member of the British order of honor; ranks below a baron but above a knight	a member of the aristocracy