The word 'upholster' usually refers to working on furniture, not clothing or other items. After studying design, she decided to upholster antique furniture for a living.
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Transformation
'Upholster' implies changing the appearance and often the comfort level of furniture. He wanted to upholster his armchair to match the new curtains.
Pro Tip 3/3
Renewal
Upholstering is often done to make old furniture look new and clean, not just for decoration. The hotel decided to upholster their lobby seating for a renewed atmosphere.