body waste vs pee

body waste and pee both are nouns.

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

As nouns, pee is a hyponym of body waste; that is, pee is a word with a more specific, narrower meaning than body waste:

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

body waste (noun)	pee (noun)
waste matter (as urine or sweat but especially feces) discharged from the body	informal terms for urination
	liquid excretory product

body waste (verb)	pee (verb)
	eliminate urine