barf vs excretory product

barf and excretory product both are nouns.

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

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

barf: the matter ejected in vomiting
excretory product: waste matter (as urine or sweat but especially feces) discharged from the body

Other hypernyms of barf include body waste, excrement, excreta, excretion.

barf (noun)	excretory product (noun)
the matter ejected in vomiting	waste matter (as urine or sweat but especially feces) discharged from the body

barf (verb)	excretory product (verb)
eject the contents of the stomach through the mouth