Though they belong to the same species, Apiaceae, cumin and caraway are different spices. Cumin is spicier and has a warm aroma because of its essential oil content. Cuminaldehyde is the principle phytochemical in cumin seeds.
Caraway seeds are long, crescent-shaped, and ridged. These are mostly used as a whole and not ground. Caraway seeds have more anise-like flavor. Carvacrol and carvone significantly contribute to the therapeutic benefits of caraway seeds.