A utensil consisting of a small, shallow bowl on a handle, used in preparing, serving, or eating food. Source: http://www.thefreedictionary.com/serving+spoon

A knife is a cutting tool with an exposed cutting edge or blade, hand-held or otherwise, with or without a handle. Knife-like tools were used at least two-and-a-half million years ago, as evidenced by the Oldowan tools. Source: http://en.wiktionary.org/wiki/knife

A a wooden board where meats or vegetables can be cut. Source: http://www.thefreedictionary.com/chopping+board