Winter clothing — garments worn in winter (coats, sweaters, gloves, etc.). Used in retail to refer to seasonal winter apparel.
冬物のコートを新しく買った。
I bought a new winter coat.
デパートで冬物のセールが始まった。
The department store's winter-sale for seasonal clothing has started.
子供の冬物はすぐにサイズが合わなくなるから困る。
Kids rapidly outgrow winter clothes, so it's a problem.
Winter goods — items sold in winter, not limited to clothing (heaters, winter accessories, seasonal products). Opposite: 'summer goods'.
店頭には暖かい冬物が並んでいる。
Warm winter goods are displayed at the front of the shop.
冬物の入荷は例年より少し遅れた。
This year's stock of winter goods arrived a little later than usual.