Annoyance
Part of speech: noun
Definition: That which annoys. An act or instance of annoying. The psychological state of being annoyed or irritated.
Example sentence: People communicate anger of course through facial expressions, but in voice, there's a wider spectrum, like cold anger and hot anger and frustration and annoyance, and that entire spectrum is a lot clearer in the voice channel.
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: When I'm writing a novel, which is what I like to write, I get up early, sit zazen, make a pot of green tea. I wear wrist cuffs to keep my wrists warm and minimize irritation from extended contact with the surface of my desk. I sit down and write.