irritate vs chivvy

irritate and chivvy both are verbs.

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

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

irritate (verb)	chivvy (verb)
excite to an abnormal condition, or chafe or inflame	annoy continually or chronically
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