excrement vs nates

excrement and nates both are nouns.

Word	Noun	Adjective	Verb	Adverb
excrement	Yes	No	No	No
nates	Yes	No	No	No

excrement (noun)	nates (noun)
waste matter (as urine or sweat but especially feces) discharged from the body	the fleshy part of the human body that you sit on