Plural of decor; multiple styles or arrangements of decoration and furnishings.
From French décor, plural décors, from Latin decor. The English plural simply adds -s, though the French origin means the word is somewhat hybrid in its English naturalization.
Interestingly, 'decor' borrowed from French keeps its somewhat exotic feel in English—we might say 'the decor of the room' rather than 'the decorations,' suggesting 'decor' carries more of a sense of curated style. The plural 'decors' highlights how we borrowed the whole French word, not just the concept.
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