Solutions are specific types of homogeneous mixtures formed when one substance (the solute) dissolves completely into another (the solvent).
This is the substance in a solution that does the dissolving, like water in our lemonade example.
This is the substance that gets dissolved in a solution, like sugar in our lemonade analogy.
This term refers to the point at which no more solute can be dissolved into a solvent at a given temperature. If you keep adding sugar to your lemonade and it stops dissolving, your solution has reached saturation.