STRAINER - a filter is a device that is designed to block certain objects or substances while letting others through. Filters are often used to remove harmful substances from air or water, for example to remove air pollution, to make water drinkable, to prepare coffee. In domestic food and drink preparation where bulk solids are removed from liquids
COLANDER - is a type of sieve used in cooking for separating liquids and solids. It is usually made of a light metal, such as aluminium, although it is not uncommon for it to be made of plastic. A colander is pierced with a pattern of small holes for the liquid to drain through, but allowing the solids to remain inside the sieve itself. It is usually shaped as an inverted dome or cone.