燃やす
anthracite
black
block
briquette
carbon
charcoal
chunk
close up
coal
combusted
combustible
comfort
cut
energy
extraction
fire
fossil
fuel
furnace
grimy
ground
heat
industry
inflammable
lump
mine
mineral
natural
nugget
ore
piece
pile
production
raw
resource
retort
rock
shale
shiny
soot
stone
underground
warmth
wealth
white