# What's the difference between aqueous NaOH and dilute NaOH?

Dilute $\ce{NaOH}$ can be prepared by adding a suitable amount of concentrated $\ce{NaOH}$.

What's the difference between "dilute $\ce{NaOH}$" and "aqueous $\ce{NaOH}$"?

Dilute simply means that the concentration of the solute of interest, in this case $\ce{NaOH}$, is low relative to some reference. One could imagine a non-aqueous, dilute solution of $\ce{NaOH}$ in, say, methanol.
• Concentrated aqueous solution - High $\ce{NaOH}$ concentration in a water solvent
• Dilute aqueous solution - Low $\ce{NaOH}$ concentration in a water solvent
• Concentrated methanolic solution - High $\ce{NaOH}$ concentration in a methanol solvent
• Dilute methanolic solution - Low $\ce{NaOH}$ concentration in a methanol solvent