vomitus vs excreta

vomitus and excreta both are nouns.

Word	Noun	Adjective	Verb	Adverb
vomitus	Yes	No	No	No
excreta	Yes	No	No	No

As nouns, excreta is a hypernym of vomitus; that is, excreta is a word with a broader meaning than vomitus:

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

Other hypernyms of vomitus include body waste, excrement, excretion, excretory product.

vomitus (noun)	excreta (noun)
the matter ejected in vomiting	waste matter (as urine or sweat but especially feces) discharged from the body