vomit vs excrete

vomit is a noun but excrete is not a noun.

Word	Noun	Adjective	Verb	Adverb
vomit	Yes	No	Yes	No
excrete	No	No	Yes	No

As verbs, excrete is a hypernym of vomit; that is, excrete is a word with a broader meaning than vomit:

Other hypernyms of vomit include egest, eliminate, pass.

vomit (noun)	excrete (noun)
the reflex act of ejecting the contents of the stomach through the mouth
a medicine that induces nausea and vomiting
the matter ejected in vomiting

vomit (verb)	excrete (verb)
eject the contents of the stomach through the mouth	eliminate from the body