sentences: thermal conduction is when heat flows from warmer object to cooler object
docs: external_combustion_engine is heat_engine. humidifier is climate_control_device. burning is extreme_thermal_situation. thermal_modification is heating. radiant_heating is heating. thermal_conductivity is disposition. evaporative_cooler is cooling_system. heat_sink is conductor. thermals is rising_currents_of_warm_air. thermal_conductivity is non_aspectual_quantity.