excretion vs ordure

excretion and ordure both are nouns.

Word	Noun	Adjective	Verb	Adverb
excretion	Yes	No	No	No
ordure	Yes	No	No	No

As nouns, ordure is a hyponym of excretion; that is, ordure is a word with a more specific, narrower meaning than excretion:

excretion: waste matter (as urine or sweat but especially feces) discharged from the body
ordure: solid excretory product evacuated from the bowels

excretion (noun)	ordure (noun)
the bodily process of discharging waste matter	solid excretory product evacuated from the bowels
waste matter (as urine or sweat but especially feces) discharged from the body