How to say "defence" in Japanese

Choosing the right word
  • 防御ぼうぎょCommon
    noun, suru verb, transitive verbThe general word for defence as an act of warding off attack or harm; it covers protecting a person, place, or thing from danger or an enemy.
    その市しの防御ぼうぎょは堅固けんごだ。↗
    The defenses of the city are strong.
  • 防衛ぼうえいJLPT N1approx.Common
    noun, suru verb, transitive verbDefence in the sense of protecting a country or its territory against outside threat; this is the word behind talk of national defence.
    The outlook for the defense program is dismal.
  • 弁護べんごJLPT N1approx.Common
    noun, suru verb, transitive verbDefence in the legal sense: speaking in someone's defence in court, or defending a person or position against criticism or accusation.
    まことにすみませんが、私のために弁護べんごしていただけませんか。↗
    Would you be kind enough to put in a word for me?
  • 守りまもりCommon
    nounPrimarily 'protection': the act of guarding or keeping something safe. As 'defence' it keeps a protective nuance, the emphasis on keeping safe rather than on combat.
    守まもりを固かためろ!来くるぞ!↗
    Tighten the defences! They're coming!
  • 警備けいびJLPT N2approx.Common
    noun, suru verb, transitive verbReally 'security' or 'guarding': watching over buildings, events, or people to prevent trouble or incidents. For defence against attack it is seldom the word you want.
    500 policemen were put on strict alert.

Choose 防御 for defence against attack or harm in general, 防衛 for defending a country or territory, 弁護 for legal defence, 「守り」 for protective guarding, and 警備 for security guarding.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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