impatience vs irritation

impatience and irritation both are nouns.

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

As nouns, irritation is a hypernym of impatience; that is, irritation is a word with a broader meaning than impatience:

Other hypernyms of impatience include annoyance, botheration, vexation.

impatience (noun)	irritation (noun)
a dislike of anything that causes delay	unfriendly behavior that causes anger or resentment
a restless desire for change and excitement	the act of troubling or annoying someone
a lack of patience; irritation with anything that causes delay	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