Tolkien considered orcs/goblins the same thing, except for the name change. Thranduil and his people weren't evil, just a little distrustful of dwarves, as almost all the elves seemed to be in the Third Age, and though they kept them captive, they were treated extremely well. The 'discrepencies' don't bother me in the least bit, though I don't know that any of these really are.
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Member of Pervy Elf Fanciers Anonymous...I need professional help.
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