Irritation
Part of speech: noun
Definition: The act of irritating, or exciting, or the state of being irritated; excitement; stimulation, usually of an undue and uncomfortable kind; especially, excitement of anger or passion; provocation; annoyance; anger. The act of exciting, or the condition of being excited to action, by stimulation; -- as, the condition of an organ of sense, when its nerve is affected by some external body; esp., the act of exciting muscle fibers to contraction, by artificial stimulation; as, the irritation of a motor nerve by electricity; also, the condition of a muscle and nerve, under such stimulation. A condition of morbid excitability or oversensitiveness of an organ or part of the body; a state in which the application of ordinary stimuli produces pain or excessive or vitiated action.
Example sentence: My music has a high irritation factor. I've always tried to say something. Eccentric lyrics about eccentric people. Often it was a joke. But I would plead guilty on the grounds that I prefer eccentricity to the bland.
Excitation
Part of speech: noun
Definition: The act of exciting or putting in motion; the act of rousing up or awakening.The act of producing excitement (stimulation); also, the excitement produced.The activity produced in an organ, tissue, or part, such as a nerve cell, as a result of stimulationThe change in state as an excited state is formed by the absorption of a quantum of energy