Compounds of 四海

• 四海
  (n) the whole world
  the seven seas
• 一天四海
  (n) the world
  the universe
• 四海兄弟
  (exp) people in the whole world being all brothers
  universal brotherhood
• 四海同胞
  (n) universal brotherhood
• 四海波静か
  (exp) (id) The world is at peace