陰弁慶[kagebenkei] lion at home but weakling elsewhere
慶ぶ[yorokobu] to be delighted
慶賀[keiga] congratulation
慶事[keiji] auspicious event
慶祝[keishuku] congratulation

慶弔[keichou] congratulations and condolences
慶安[keian] agency for employing servants and arranging marriages (Edo period)
国慶節[kokkeisetsu] anniversary of founding (of PRC)
同慶[doukei] matter for mutual congratulation
内弁慶[uchibenkei] braggart