chasm [chasms](gap) noun [UK: ˈkæ.zəm] [US: ˈkæ.zəm] cleft [clefts](opening made or as if made by splitting) noun [UK: kleft] [US: ˈkleft] crack [cracks](narrow opening) noun [UK: kræk] [US: ˈkræk] rift [rifts](chasm or fissure) noun [UK: rɪft] [US: ˈrɪft] |