retch vs eliminate

retch is a noun but eliminate is not a noun.

Word	Noun	Adjective	Verb	Adverb
retch	Yes	No	Yes	No
eliminate	No	No	Yes	No

As verbs, eliminate is a hypernym of retch; that is, eliminate is a word with a broader meaning than retch:

Other hypernyms of retch include egest, excrete, pass.

retch (noun)	eliminate (noun)
an involuntary spasm of ineffectual vomiting

retch (verb)	eliminate (verb)
eject the contents of the stomach through the mouth	eliminate from the body
make an unsuccessful effort to vomit; strain to vomit	kill in large numbers
	terminate, end, or take out
	remove (an unknown variable) from two or more equations
	dismiss from consideration or a contest
	remove from a contest or race
	get rid of something