共棲[tomoiki] symbiosis
棲家[sumika] dwelling
水棲[suisei] aquatic (life)
棲息[seisoku] inhabiting
同棲[dousei] cohabitation

両棲[ryousei] amphibious
隠棲[insei] secluded life
旧棲[kyuusei] old home
棲み分け[sumiwake] habitat isolation (biology)
両棲動物[ryouseidoubutsu] amphibious animal

暗黒大陸[ankokutairiku] Dark Continent (i.e. Africa)
海陸[kairiku] land and sea
旧大陸[kyuutairiku] the Old World
緊急着陸[kinkyuuchakuriku] emergency landing
空陸[kuuriku] land and air

在日米陸軍[zainichibeirikugun] US Army, Japan
上陸[jouriku] landing
上陸用舟艇[jourikuyoushuutei] landing craft
水陸[suiriku] land and water