塵入[gomiire] trashcan
塵箱[gomibako] garbage can
黄塵[koujin] dust (in air)
灰塵[haijin] ashes and dust
含塵率[ganjinritsu] dust content

吸塵[kyuujin] dust vacuuming
後塵[koujin] second fiddle
市塵[shijin] city dust
塵芥[jinkai] rubbish

肺炎[haien] pneumonia
肺活量[haikatsuryou] lung capacity
肺肝[haikan] lungs and livers
肺結核[haikekkaku] pulmonary tuberculosis
肺臓[haizou] lungs

肺病[haibyou] lung disease
肺胞[haihou] pulmonary alveolus
肺葉[haiyou] pulmonary lobe
肺ガン[haigan] lung cancer