vex vs annoy

vex and annoy both are verbs.

Word	Noun	Adjective	Verb	Adverb
vex	No	No	Yes	No
annoy	No	No	Yes	No

As verbs, vex and annoy are synonyms defined as:

vex and annoy: cause annoyance in; disturb, especially by minor irritations

Other synonyms of vex include bother, chafe, devil, get at, get to, gravel, irritate, nark, nettle, rag, rile.

vex (verb)	annoy (verb)
be a mystery or bewildering to	cause annoyance in; disturb, especially by minor irritations
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