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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

artifact, artefact go
a man-made object taken as a whole

instrumentation, instrumentality go
an artifact (or system of artifacts) that is instrumental in accomplishing some end

device go
an instrumentality invented for a particular purpose

heater, warmer
device that heats water or supplies warmth to a room

noun.artifact

12 Subcategories

brazier, brasier go
large metal container in which coal or charcoal is burned
convector go
a space heater that transfers heat to the surrounding air by convection
defroster, deicer go
heater that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane)
demister go
heater that removes mist from the windshield of a car
gas heater go
a heater that burns gas for heat
heating pad, hot pad go
heater consisting of electrical heating elements contained in a flexible pad
oil heater, oilstove, kerosene heater, kerosine heater go
heater that burns oil (as kerosine) for heating or cooking
radiator go
heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings
solar heater go
a heater that makes direct use of solar energy
space heater go
heater consisting of a self-contained (usually portable) unit to warm a room
stove go
any heating apparatus
water heater, hot-water heater, hot-water tank go
a heater and storage tank to supply heated water