irritate vs beset

irritate and beset both are verbs.

Word	Noun	Adjective	Verb	Adverb
irritate	No	No	Yes	No
beset	No	No	Yes	No

As verbs, beset is a hyponym of irritate; that is, beset is a word with a more specific, narrower meaning than irritate:

irritate (verb)	beset (verb)
excite to an abnormal condition, or chafe or inflame	assail or attack on all sides:
excite to some characteristic action or condition, such as motion, contraction, or nervous impulse, by the application of a stimulus	decorate or cover lavishly (as with gems)
cause annoyance in; disturb, especially by minor irritations	annoy continually or chronically