Mount St. Helens' output
(Other definitions for lava that I've seen before include "It flows from volcano" , "Obsidian" , "Stuff heatedly hurled out" , "Volcanic outpouring" , "Volcanic flowing substance" .)
(Other definitions for ash that I've seen before include "Grey colour" , "What's left of the fire" , "Volcanic dust" , "blonde" , "End of fire" .)