guano vs excretory product

guano and excretory product both are nouns.

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

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

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

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