How to say "protection" in Japanese

Choosing the right word
  • 保護ほごJLPT N1approx.Common
    noun, suru verb, transitive verbThe general-purpose word for protection: keeping people, rights, or the environment safe from harm. It also covers guardianship and custody, as of a child.
    その子こはおじの保護ほごを受うけている。↗
    He is in custody of his uncle.
  • 防衛ぼうえいJLPT N1approx.Common
    noun, suru verb, transitive verbProtection in the sense of defense: guarding a nation or group against attack or invasion. Choose this when 'protection' means defending against an enemy or threat.
    The outlook for the defense program is dismal.
  • 予防よぼうJLPT N3approx.Common
    noun, suru verb, transitive verbProtection against something that has not happened yet: preventing illness, accidents, or disasters before they occur. Use it for 'protection against' in the preventive sense, or for 'precaution'.
    治療ちりょうよりも予防よぼう。↗
    Prevention is better than cure.
  • 守りまもりCommon
    nounThe noun form of the verb meaning 'to protect, guard': the act of guarding or defending a person, place, or thing. It suits contexts of watching over or defending, rather than institutional protection.
    守まもりを固かためろ!来くるぞ!↗
    Tighten the defences! They're coming!
  • 守護しゅごCommon
    suru verb, no-adjective, transitive verbProtection in the sense of guardianship: watching over and safeguarding a person or thing, as a guardian or patron does. It is not the everyday word for general protection from harm.

Use 保護 for general protection of people, rights, or things from harm; 防衛 for defense against attack; 予防 for protection against illness or disaster; 「守り」 for the act of guarding; 守護 for watchful guardianship.

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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