熱 - heat, temperature, fever

zealous; enthusiastic; ardent; fervent; keen; eager

insulation

wild enthusiasm; being crazy about

heat; hot air

being enthusiastic about; being wild about; being absorbed in; being engrossed in; being devoted to

white heat; incandescence; (emitting) white light; white glow

cost of fuel and lighting; cost of heat and electricity; energy bill; utility cost

passion; enthusiasm; zeal

hot (to the touch)

to heat; to heat up

boiling water

heating; application of heat