excrement vs prat

excrement and prat both are nouns.

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

excrement (noun)	prat (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