As much as soap and detergent are mostly used to wash or clean dirty materials, there are some differences between the two. Soap is a substance made synthetically or from fat, which can easily mix with oil and water, and which can be used to clean dirty materials. Chemically speaking, soap is any substance gotten from the reaction between an alkali metal hydroxide and a fatty acid. Detergent, on the other hand, refers to any non-soap cleaning material.
While a detergent could be soap, there are other non-soap cleaning agents that can be regarded as detergents. For instance, there are different kinds of soap, such as bar soap, dishwashing soap, and liquid hand soap. On the other hand, examples of detergents are water, clay, sand, glass cleaner, soap, etc. In terms of effectiveness, soaps are very effective compared to detergents. Soaps are made with chemicals that can easily mix with oils to break them, while water will be used to make the process complete.