excretory product vs excrement

excretory product and excrement both are nouns.

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

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

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

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

excretory product (noun)	excrement (noun)
waste matter (as urine or sweat but especially feces) discharged from the body	waste matter (as urine or sweat but especially feces) discharged from the body