珪藻[keisou] diatom
珪藻土[keisoudo] diatomaceous soil
二酸化珪素[nisankakeiso] silicon dioxide (SiO2)
珪素[keiso] silicon (Si)
珪酸[keisan] silicic acid

珪砂[keisha] silica sand
珪石[keiseki] silica
珪性肺塵症[keiseihaijinshou] pneumonoultramicroscopicsilicovolcanoconiosis
珪素鋼[keisokou] silicon steel
珪素樹脂[keisojushi] silicone resin

バイオ素子[baiososhi] bio-device
弗素[fusso] fluorine (F)
一酸化炭素[issankatanso] carbon monoxide
栄養素[eiyouso] nutrient
塩化水素[enkasuiso] hydrogen chloride

塩素[enso] chlorine (Cl)
塩素酸[ensosan] chloric acid
塩素酸塩[ensosanen] chlorate
音楽の素質[ongakunososhitsu] aptitude for music
音素[onso] phoneme

圧延鋼[atsuenkou] rolled steel
丸鋼[marukou] round steel bar
協力鋼[kyouryokukou] high-tension steel
鋼管[koukan] steel pipe
鋼玉[kougyoku] corundum

鋼材[kouzai] steel material
鋼索[kousaku] cable
鋼線[kousen] steel wire
鋼鉄[koutetsu] steel