excreta vs body waste

excreta and body waste both are nouns.

Word	Noun	Adjective	Verb	Adverb
excreta	Yes	No	No	No
body waste	Yes	No	No	No

As nouns, excreta and body waste are synonyms defined as:

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

Other synonyms of excreta include excrement, excretion, excretory product.

excreta (noun)	body waste (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