► 動詞
落石 [らくせき] [落石する] meaning: rock rank: 4
☆ 工事中に落石して死傷者が出た ⇨ Fatalities occurred when rocks fell during a construction (☛ A big rock to fall)
► 名詞
岩 [(2)いわ] meaning: rock rank: 2
☆ 山の斜面から岩が崩れ落ちた ⇨ Rocks slid off from the mountain slope (☛ Large rocks)
溶岩 [(1)ようがん] meaning: rock rank: 4
☆ 火山が爆発して溶岩が噴き出した ⇨ The volcano erupted and lava gushed out
落石 [らくせき] meaning: rock rank: 4
☆ 落石事故 ⇨ A rock fall accident (☛ A big rock to fall)