* Homogeneous mixtures: Solutions are homogeneous mixtures of two or more substances. The solute is evenly distributed throughout the solvent, and the mixture appears to be a single phase. Colloids, on the other hand, are heterogeneous mixtures in which the particles are dispersed throughout the medium but do not dissolve.

* Suspensions: Suspensions are heterogeneous mixtures in which the particles are larger than 1 micrometer in diameter. The particles in a suspension settle out over time, while the particles in a colloid remain dispersed.

* Emulsions: Emulsions are heterogeneous mixtures of two immiscible liquids. The droplets of one liquid are dispersed throughout the other liquid, but the two liquids do not dissolve into each other. Colloids, on the other hand, are mixtures of a solid or liquid dispersed in a gas or liquid.

* Gels: Gels are semi-solid mixtures in which the particles are held together by a network of bonds. Colloids, on the other hand, are liquid or gas mixtures in which the particles are not held together by bonds.

* Solids: Solids are materials that have a definite shape and volume. Colloids, on the other hand, are mixtures in which the particles are dispersed throughout the medium and do not have a definite shape or volume.