Fruits and vegetables are prime examples of homogeneous substances: many suppliers offer fruits and vegetables for sale, but regardless of company, all brands offer the same end product. Most homogeneous products are very similar in physical composition, as well as quality, and the only real difference between the various manufacturer's products is price. In addition to produce, other types of homogeneous products are cosmetic items such as cotton balls and cotton swabs.
In contrast to homogeneous products, heterogeneous products are items that cannot be easily substituted or replaced by others. Heterogeneous products have distinct features that make them unique to certain brands and suppliers. These items might vary in physical appearance, as well as quality and price. Heterogeneous products are often designed to attract different segments of the population, and cater to people of varying geographical locations and socioeconomic status. Books and magazines are examples of heterogeneous products, as are electronic goods, such as computers and cell phones.