Uncle Tom vs ethnic slur

Uncle Tom and ethnic slur both are nouns.

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

Uncle Tom (noun)	ethnic slur (noun)
a servile black character in a novel by Harriet Beecher Stowe	a slur on someone's race or language
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