eat on vs vex

eat on and vex both are verbs.

Word	Noun	Adjective	Verb	Adverb
eat on	No	No	Yes	No
vex	No	No	Yes	No

As verbs, vex is a hypernym of eat on; that is, vex is a word with a broader meaning than eat on:

eat on: worry or cause anxiety in a persistent way
vex: disturb the peace of mind of; afflict with mental agitation or distress

Other hypernyms of eat on include worry.

eat on (verb)	vex (verb)
worry or cause anxiety in a persistent way	be a mystery or bewildering to
	subject to prolonged examination, discussion, or deliberation
	change the arrangement or position of
	cause annoyance in; disturb, especially by minor irritations
	disturb the peace of mind of; afflict with mental agitation or distress