一礼[ichirei] bow (salute, greeting)
家礼[kerai] retainer
回礼[kairei] going from door to door greeting relatives and friends
割礼[katsurei] circumcision (male)
儀礼[girei] etiquette

儀礼的[gireiteki] formal
儀礼兵[gireihei] guard of honor
虚礼[kyorei] empty (useless) formalities
偶像礼拝[guuzoureihai] idolatry
軍礼[gunrei] military honors