桂庵[keian] agency for employing servants and arranging marriages (Edo period)
桂冠[keikan] crown of laurel
桂冠詩人[keikanshijin] poet laureate
桂皮[keihi] cinnamon
月桂冠[gekkeikan] laurel wreath

月桂樹[gekkeiju] bay laurel (Laurus nobilis)
肉桂[nikkei] cinnamon
月桂[gekkei] laurel
桂林[keirin] katsura forest

亜科[aka] subfamily
医科[ika] medical science
医科大学[ikadaigaku] medical school
家庭科[kateika] home economics
科名[kamei] family name

科する[kasuru] to inflict
科学[kagaku] science
科学院[kagakuin] science institute
科学技術[kagakugijutsu] science and technology