How to say "conservation" in Japanese

Choosing the right word
  • 保存ほぞんJLPT N3approx.Common
    noun, suru verb, transitive verbCovers preservation in the sense of keeping something unchanged or storing it for later — saving files and data, preserving documents, food, or records. For conserving nature or resources, one of the other words is preferred.
    私達わたしたちは田舎いなかの美うつくしさを保存ほぞんするべきだ。↗
    We should preserve the beauties of the countryside.
  • 保全ほぜんCommon
    noun, suru verb, transitive verbConservation as keeping something intact and in working order — natural environments, resources, or equipment. The nuance is maintaining integrity and function rather than simply shielding something from harm.
    この地域ちいきは保全ほぜん地域ちいきに指定していされています。↗
    This has been designated a conservation area.
  • 保護ほごJLPT N1approx.Common
    noun, suru verb, transitive verbThe word you want for conservation of nature, wildlife, and the environment, with a nuance of actively protecting something from harm or destruction. Also covers preservation of cultural properties and similar treasured things.
    If mankind doesn't take care of the environment, the environment may eliminate mankind.
  • 保守ほしゅJLPT N1approx.Common
    nounChiefly means conservatism — a conservative political or ideological stance — and conservativeness. Its 'conservation' sense is narrow and technical, so it is seldom the word you want for conserving nature, resources, or energy.
    彼かれは保守ほしゅ寄よりだ。↗
    He is conservative to a degree.

Use 保護 for protecting nature, wildlife, and the environment, 保全 for keeping environments, resources, or equipment intact and functioning, 保存 for preserving or storing things unchanged, and avoid 保守, which chiefly means conservatism.

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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