dirty word vs excreta

dirty word and excreta both are nouns.

Word	Noun	Adjective	Verb	Adverb
dirty word	Yes	No	No	No
excreta	Yes	No	No	No

dirty word (noun)	excreta (noun)
an offensive or indecent word or phrase	waste matter (as urine or sweat but especially feces) discharged from the body
a word that is considered to be unmentionable