필요need; necessity; requirement 필수requirement; must 필수essentials; requirements; necessities; a must 필수적being essential; being required; being indispensable 필수적essential; indispensable; required 필수품essentials; necessities 필요량requirement; amount needed 필요성necessity; need 불필요being unnecessary 생활필수품daily necessities

사망death; passing away; being killed 사망률death rate 사망자the dead; casualty; victim 치사causing death 치사량lethal dose 치사율fatality rate; lethality rate 토사구팽killing the dog after hunting 필사적being desperate; being frantic 필사적desperate; frantic 횡사accidental death; unnatural death