The word that describes different compounds which are found together but not chemically combined is "mixture." A mixture is a material made up of two or more different chemical substances that are physically combined but retain their individual chemical properties because they are not chemically bonded. The components in a mixture can be separated by physical means, such as filtration, distillation, or magnetic separation, without any chemical reactions. This distinguishes mixtures from compounds, which have a fixed ratio of elements chemically bonded together. Mixtures can be homogeneous, with uniform composition throughout (like salt dissolved in water), or heterogeneous, where the components are visibly distinct (like sand and water).

Thus, when different compounds occur together without chemical bonding, they form a mixture.