worsen vs irritate

worsen and irritate both are verbs.

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

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

Other hyponyms of worsen include inflame, cheapen, degrade.

worsen (verb)	irritate (verb)
grow worse	excite to an abnormal condition, or chafe or inflame
make worse	excite to some characteristic action or condition, such as motion, contraction, or nervous impulse, by the application of a stimulus
	cause annoyance in; disturb, especially by minor irritations