guano vs body waste

guano and body waste both are nouns.

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

As nouns, body waste is a hypernym of guano; that is, body waste is a word with a broader meaning than guano:

guano: the excrement of sea birds; used as fertilizer
body waste: waste matter (as urine or sweat but especially feces) discharged from the body

guano (noun)	body waste (noun)
the excrement of sea birds; used as fertilizer	waste matter (as urine or sweat but especially feces) discharged from the body