Gadget: A small, electronic device for a specific task. Example: "I love my new smartphone; it's a handy gadget." Tool: An instrument used for manual work or a specific purpose. Example: "A hammer is a useful tool for woodworking." Equipment: A collection of tools or machinery for a particular activity. Example: "The gym has state-of-the-art equipment for exercising." Appliance: A household machine for performing domestic tasks. Example: "The dishwasher is a common kitchen appliance." Note: Your question seems to repeat "gadget /tool /equipment/ appliance." If you intended to ask something else, please clarify.