excretory product vs excretion

excretory product and excretion both are nouns.

Word	Noun	Adjective	Verb	Adverb
excretory product	Yes	No	No	No
excretion	Yes	No	No	No

As nouns, excretory product and excretion are synonyms defined as:

excretory product and excretion: waste matter (as urine or sweat but especially feces) discharged from the body

Other synonyms of excretory product include body waste, excrement, excreta.

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