位官[ikan] rank and official position
依願免官[iganmenkan] retirement at one's own request
尉官[ikan] officer below the rank of major
医官[ikan] medical officer
沖縄開発庁長官[okinawakaihatsuchouchoukan] Director General of Okinawa Development Agency

下士官[kashikan] non-commissioned officer
下士官兵[kashikanhei] enlisted man
科学技術庁長官[kagakugijutsuchouchoukan] Director General of Science and Technology Agency
会計官[kaikeikan] accountant
外交官[gaikoukan] diplomat

警める[imashimeru] to admonish
機械警備[kikaikeibi] card-key system
機動警察[kidoukeisatsu] mobile police
軍事警察[gunjikeisatsu] military police
警衛[keiei] guard

警戒[keikai] vigilance
警戒心[keikaishin] wariness
警官[keikan] policeman
警句[keiku] aphorism
警護[keigo] bodyguard