Here's a breakdown:

* Liquid solvents: The most common type of solutions. Examples include saltwater (salt dissolved in water), sugar water (sugar dissolved in water), and alcohol in water.

* Solid solvents: Alloys are a common example of solid solutions. For instance, brass is a solid solution of copper and zinc.

* Gaseous solvents: Air is a classic example of a gaseous solution, with nitrogen, oxygen, and other gases dissolved in each other.

The key to a solution is that the solute (the substance being dissolved) is evenly distributed throughout the solvent (the substance doing the dissolving).