What is the difference between a cardigan and a coatigan?

The difference between a cardigan and a coatigan is the length and thickness. Cardigan is the word for knit layering pieces that are often worn over dresses and separates. A coatigan is a cardigan that typically falls anywhere below the hips and is thick enough to provide warmth when worn as outerwear. On 1stDibs, shop a selection of cardigans and coatigans.