Yes, both terms are different. Reconstitution is the process of adding a liquid diluent to a dry ingredient to make a solution. In dilution, we add more solvent to a solution of a higher concentration to reduce its concentration.
For instance, if you make lemonade with too much sugar, you can add water to reach the desired flavor. This is dilution. But, in making pancakes, you can not add diluents to your liking because the batter needs to have the proper consistency. The appropriate ratio of wet and dry ingredients is reconstitution.
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