Colloidal suspensions are mixtures that refer to particles dispersed uniformly in a medium, which are usually too small to be seen without a microscope. However, there are several synonyms for colloidal suspension depending on the context. Some other terms used include colloidal dispersion, colloidal solution, colloid, and sol. A colloid is a surface-active agent or organic material that is evenly dispersed throughout a fluid system, while a sol is a homogenous mixture of very small particles in a liquid. Therefore, it is essential to understand the context in which these terms are used to accurately communicate scientific findings.