1) the bright flames of a fire (blaze)

2) (a part of) a stove, furnace etc producing flames (burner)

3) likely to burst into flames and to burn quickly (flammable)

4) a soft light from something hot without flames (glow)

5) (to cause something) to catch fire or burst into flames or flaming colour; to encourage (strong, feeling, interest etc) (kindle)

6) not able to burst into flames (non-flammable)