Sieves and STRAINERS are both tools used to separate solids from liquids. Sieves, also known as STRAINERS, are typically made of metal or plastic mesh and are used to sift or strain out larger particles from a mixture. Sifts, on the other hand, are usually made of fine mesh and are used to separate smaller particles from a mixture. Both sieves and sifts are commonly used in cooking, baking, and other food preparation tasks.