(obsolete) silica, silicon dioxide

soil that is used plantation (農(のう)園(えん) (nōen)), orchard (果(か)樹(じゅ)園(えん) (kajuen)) or other field named suffixed with "園(えん) (en)."

this world, the world of the living / a remote location / poor-quality soil

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

(operations, mathematics) linear programming

city planning tax. One of Japanese real estate taxes.

UNEP, United Nations Environment Programme

Obsolete spelling of トルコ (“Turkey”)

Alternative spelling of コンクリート

(mining) bauxite