Solution Vocabulary (Chapter 4)

a solution is a homogenous mixture in which one or more solutes are dissolved in a solvent. A solution may be dilute or concentrated, depending on the amount of solute dissolved in a given amount of solvent.
Concentration (e.g., percentage concentration) is a ratio of the amount of solute to either the amount of solvent or the amount of the solution.
The amount of solute required to give a saturated solution at a given temperature is called the solute’s solubility. Unsaturated solutions will dissolve more solute, but supersaturated solutions are unstable and tend to give a precipitate.  

Source = Brady, James E. 2009. Chemistry Fifth Edition. Asia : John Willey & Sons.