火綿 is read as かめん (kamen) and means colloxylin.
かめん
kamen
めんかやく
guncotton
かせい
Mars (planet)
ひのこ
sparks
かざんばい
volcanic ash
ひのたま
fireball
force of a fire
ひばしら
pillar of fire
かざんぜんせん
volcanic front
かざんとう
volcanic island
ひかげん
condition of fire
かせいきょうかい
Mars Society
かたくむじょう
impermanent (like a burning house)