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spelling - n. the act of forming words from letters
pronunciation - n. the way in which a word is said
irregular - adj. not following the normal patterns by which word forms are usually created
interest - n. a feeling of wanting to learn more about something or to be involved in something
tightly - adv. in a way that is fastened, attached, or held in a position that is not easy to move
nail - n. a long, thin piece of metal that is sharp at one end and flat at the other end and used mainly to attach things to wood
