ethnic slur vs aspersion

ethnic slur and aspersion both are nouns.

Word	Noun	Adjective	Verb	Adverb
ethnic slur	Yes	No	No	No
aspersion	Yes	No	No	No

As nouns, aspersion is a hypernym of ethnic slur; that is, aspersion is a word with a broader meaning than ethnic slur:

Other hypernyms of ethnic slur include slur.

ethnic slur (noun)	aspersion (noun)
a slur on someone's race or language	an abusive attack on a person's character or good name
	the act of sprinkling water in baptism (rare)
	a disparaging remark