chafe vs irritation

chafe and irritation both are nouns.

Word	Noun	Adjective	Verb	Adverb
chafe	Yes	No	Yes	No
irritation	Yes	No	No	No

As nouns, irritation is a hyponym of chafe; that is, irritation is a word with a more specific, narrower meaning than chafe:

Other hyponyms of chafe include pique, temper, frustration, aggravation, exasperation, harassment, torment, displeasure.

chafe (noun)	irritation (noun)
anger produced by some annoying irritation	unfriendly behavior that causes anger or resentment
soreness and warmth caused by friction	the act of troubling or annoying someone
	an uncomfortable feeling of mental painfulness or distress
	a sudden outburst of anger
	the psychological state of being irritated or annoyed
	the neural or electrical arousal of an organ or muscle or gland
	(pathology) abnormal sensitivity to stimulation

chafe (verb)	irritation (verb)
warm by rubbing, as with the hands
tear or wear off the skin or make sore by abrading
cause friction
cause annoyance in; disturb, especially by minor irritations
feel extreme irritation or anger
become or make sore by or as if by rubbing