
Description of duplicate (noun: plural: duplicates) copy; photocopy; exact replica; reproduction
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Description of extraordinary (adjective) unusual
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Description of sample (noun: plural: samples) specimen; small part of something; representative part of a larger group
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Description of main (adjective) principal; head; chief
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Description of density (noun: plural: densities) compactness; closeness
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Description of keep (verb: kept; kept; keeping) to hold onto; to save; to store; to watch over; to care for
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Description of form (noun: plural: forms) shape; image; framework; document with blank spaces to be filled in; fitness; type
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Description of responsible (adjective) dependable; reliable; accountable; liable
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Description of bond (noun: plural: bonds) link; connection; obligation; grasp; certificate of debt
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Description of protocol (noun: plural: protocols) method of dealing with a certain subject; draft of a treaty
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