How to say "log" in Japanese

• ログCommon
  nounThe loanword for the computing sense: a file or record tracking events, errors, or activity on a system or network. For digital logs this is the word you want, not the native terms.
• まるたCommon
  nounA log as a physical object: a felled trunk cut to length, as in forestry, firewood, or construction. This is the word for a piece of wood, never for a written record.
  彼かれは丸太まるたをのこぎりでひいて板いたにしている。↗

  He is sawing a log into boards.
• ジャーナルCommon
  nounCovers 'journal' — a periodical or an accounting record — and appears as 'log' in technical contexts such as system journals. For everyday computer logs, ログ is the word to reach for.
• 日誌にっしCommon
  nounA written daily record: a logbook of duties, work, or a voyage, kept up day by day. This is the word for a log maintained by a person, not a machine file.
• 丸木まるきCommon
  nounWood in its natural round form — a trunk or log as raw, unshaped material. Very close to まるた, but with the emphasis on the wood being unworked rather than on the cut piece.

Choose 「ログ」 for computer records, 「まるた」 for a cut piece of timber, 丸木 for wood in its natural round state, and 「ジャーナル」 or 日誌 for written logs — the former technical or periodical, the latter a hand-kept daily record.

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

• ログlog
• まるたlog
• ジャーナルjournal
• 日誌にっしjournal
• 丸木まるきlog
• 記録きろくrecord
• 対数たいすうlogarithm
• 作譜さくふlog (i.e. work-file)
• 丸太ん棒まるたんぼうlog
• 丸材まるざいlog
• 測程儀そくていぎlog (line in shipping)
• 測程器そくていき(ship's) log
• 履歴りれきlog
• 過去ログかこログlog (file)