A dilute solution has a small amount of solute dissolved in the solution. A concentrated solution has a relatively large amount of solute dissolved in the solution.
The solute is the substance that is usually found in the least amount
The solvent, on the other hand, is the substance that usually appears in greater quantity
In a solution solvent is added to decrease the concentration of solute, therefore as the concentration of solute is decreased, there is more solvent in the solution than solute