ethnic slur vs Uncle Tom

ethnic slur and Uncle Tom both are nouns.

Word	Noun	Adjective	Verb	Adverb
ethnic slur	Yes	No	No	No
Uncle Tom	Yes	No	No	No

ethnic slur (noun)	Uncle Tom (noun)
a slur on someone's race or language	a servile black character in a novel by Harriet Beecher Stowe
	a servile black character in a novel by Harriet Beecher Stowe
	(ethnic slur) offensive and derogatory name for a Black man who is abjectly servile and deferential to Whites