- 啓蒙【けいもう】 - enlightenment, illumination 
- 拝啓【はいけい】 - Dear (so and so), Dear Sir, Dear Madam, To Whom It May Concern 
- 啓発【けいはつ】 - enlightenment, development, edification, public awareness, illumination, education, inspiration 
- 啓示【けいじ】 - (divine) revelation 
- 啓蟄【けいちつ】 - "awakening of insects" solar term (approx. March 6, the day on which hibernating insects are said to come out of the ground)