excretion vs puke

excretion and puke both are nouns.

Word	Noun	Adjective	Verb	Adverb
excretion	Yes	No	No	No
puke	Yes	No	Yes	No

As nouns, puke is a hyponym of excretion; that is, puke is a word with a more specific, narrower meaning than excretion:

excretion: waste matter (as urine or sweat but especially feces) discharged from the body
puke: the matter ejected in vomiting

excretion (noun)	puke (noun)
the bodily process of discharging waste matter	a person who is deemed to be despicable or contemptible
waste matter (as urine or sweat but especially feces) discharged from the body	the matter ejected in vomiting

excretion (verb)	puke (verb)
	eject the contents of the stomach through the mouth