How to say "installation" in Japanese

Choosing the right word
  • 導入どうにゅうJLPT N1approx.Common
    noun, suru verb, transitive verbCovers installation in the sense of introducing a new system, software, or equipment into a company or organization; the emphasis is on adoption and setting up rather than physical fitting.
    いまだにインターネットの導入どうにゅうを検討けんとうしている会社かいしゃがある。↗
    Some companies are still debating whether to get Internet access.
  • 装置そうちJLPT N3approx.Common
    noun, suru verb, transitive verbRefers to a physical device, apparatus, or piece of installed equipment, not the act of installing; choose it when English "installation" names the machine or unit itself.
    This heating system burns oil.
  • 設備せつびJLPT N3approx.Common
    noun, suru verb, transitive verbCovers installation as facilities or fitted equipment in a building, plant, or site — the installed apparatus as a whole rather than the act of installing it.
    諸しょ設備せつびの費用ひようは払はらっていただきます。↗
    You have to pay for utilities.
  • 安置あんちCommon
    noun, suru verb, transitive verbA narrow term: it covers installation only in the sense of enshrining or placing an image, and is not the word for installing equipment or software.
    指導者しどうしゃが死しんだ時とき、人々ひとびとは彼かれの死体したいを大おおきな墓はかに安置あんちした。↗
    When their leader died, they placed his body in a large tomb.
  • 据え付けすえつけCommon
    nounThe act of installing, fitting, or mounting equipment in place; use it for having a machine or appliance physically set up, rather than for adopting a system.

Choose 導入 for introducing or setting up software or systems, 「据え付け」 for physically fitting equipment, 装置 and 設備 for installations as devices or facilities rather than acts, and 安置 only for enshrining an image.

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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