Group (U V W Y Z) - Spelling Practices

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(1) a. (ультрафиолетового) wave lengths shorter than light but longer than X rays
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(3) n. Syn. speech(высказывания) vocal expression; power of speaking; last or utmost extremity
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(4) n. (клапана) device or structure for controlling the flow of a fluid 
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(5) n. Syn. speed(скорость) rapidity or speed of motion; swiftness
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(6) v. Syn. adventure(предприятие) put at risk; adventure
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(7) n. Syn. border; edge(грани) extreme edge or margin; border; enclosing boundary; space enclosed by such a boundary
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(8) n. (виртуозность) appreciation for or interest in fine objects of art; lovers of the elegant arts collectively
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(9) n. (Вирус) disease communicator; something that poisons one's soul or mind; program for unwanted actions in computer
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(10) n. Syn. viscidity; stickiness(вязкости) resistance of a liquid to shear forces; physics coefficient of viscosity; quality of flowing slowly