S: (v) descend, fall, go down, come down (move downward and lower, but not necessarily all the way) "The temperature is going down"; "The barometer is falling"; "The curtain fell on the diva"; "Her hand went up and then fell again"
S: (adj) ablaze, afire, aflame, aflare, alight, on fire (lighted up by or as by fire or flame) "forests set ablaze (or afire) by lightning"; "even the car's tires were aflame"; "a night aflare with fireworks"; "candles alight on the tables"; "houses on fire"