謹啓[kinkei] Dear Sir or Madam
啓く[hiraku] to enlighten
啓示[keiji] revelation (i.e. divine revelation)
啓発[keihatsu] enlightenment
啓蒙[keimou] enlightenment

啓蟄[keichitsu] "awakening of insects" solar term (approx. Mar. 6, the day on which hibernating insects are said to come out of the ground)
天啓[tenkei] (divine) revelation
拝啓[haikei] Dear (so and so)
啓上[keijou] speaking respectfully
啓迪[keiteki] edification

ひもじい思い[himojiiomoi] state of feeling hungry
成吉思汗[jingisukan] Japanese mutton and vegetable dish
意思決定機関[ishiketteikikan] decision-making body
意思[ishi] intention
意思決定[ishikettei] decision-making

意思表示[ishihyouji] declaration of intention
一思いに[hitoomoini] instantly
引込思案[hikkomijian] reserved
危険思想[kikenshisou] dangerous thoughts
旧思想[kyuushisou] old-fashioned idea

渦潮[uzushio] whirling tides
潮風呂[shioburo] (hot) saltwater bath
下げ潮[sageshio] ebb tide
血潮[chishio] blood spilt from the body
高潮[kouchou] high tide

黒潮[kuroshio] Japan Current
最高潮[saikouchou] climax
思潮[shichou] trend of thought
主潮[shuchou] main current
出潮[deshio] high tide

啓蒙[keimou] enlightenment
損害を蒙る[songaiwokoumuru] to suffer a loss
内蒙[naimou] Inner Mongolia
蒙る[koumuru] to suffer
無知蒙昧[muchimoumai] unenlightened

蒙古[mouko] Mongolia
蒙昧[moumai] ignorance
御免蒙る[gomenkoumuru] to receive permission
蒙古斑[moukohan] Mongolian spot
外蒙古[gaimouko] Outer Mongolia