am • mo • nia n., strong-smelling compound often used for cleaning. The smell of ammonia makes my eyes water.

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or • der • ly n., hospital attendant who performs tasks such as cleaning, carrying supplies, and moving patients. The nurse called the orderly in to change the sheets on the bed.

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parch • ment n., skin of a sheep or goat prepared for writing on. The Babylonians wrote on clay tablets and parchment.