Answer:Filtration is a process of separating solids from liquids or gases using a filter medium that allows the fluid to pass through but retains the solid particles. In a household context, filtration is commonly used in water purification systems, air purifiers, and coffee makers to remove impurities and unwanted particles.Sieving, on the other hand, is a method of separating particles based on their size using a sieve or mesh. In the kitchen, sieving is commonly used when sifting flour, sugar, or other dry ingredients to remove lumps and aerate them for baking. It is also used to strain liquids and separate solid particles from liquids, such as when making homemade sauces or soups.