Style an open-concept kitchen by treating the different zones as distinct areas while linking them with subtle detail. For example, you might choose different versions of the same kitchen lighting such as a long pendant over the dining table, and three smaller takes on the design over the island, or simply pick lighting that features the same material such as a particular metal.
Area rugs can be used beneath the dining table and under the living room furniture as well, and the two rug designs pulled together with color, or by picking two different rugs from the same design collection. And be sure to limit the kitchen color palette overall to a selection of shades which can be used over bigger areas or as accents in different zones. This approach can make elements such as cabinets, countertops, and upholstery cohesive without being samey.