vex vs bedevil

vex and bedevil both are verbs.

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

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

Other hypernyms of vex include befuddle, confound, confuse, discombobulate, fox, fuddle, throw.

vex (verb)	bedevil (verb)
be a mystery or bewildering to	be confusing or perplexing to; cause to be unable to think clearly
subject to prolonged examination, discussion, or deliberation	treat cruelly
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