ログrogu

1. noun, computinglog
2. noun, mathlog; logarithm
3. nounlog (tree trunk or branch)
4. nounlogbook (of a ship or aircraft)
5. nounlog (device for measuring the speed of a ship)

• Synonym日誌にっしNeutralA business log kept for work or on ship voyages, as in 「学級日誌」; 「ログ」 leans toward electronic records.
• SynonymジャーナルNeutralA loanword for a journal or periodical, also an accounting journal; 「ログ」 mostly means system records.
• Related日記にっきNeutralA personal diary you write in day by day; 「ログ」 usually means a computer operation log or a chat log.
• Related日録にちろくWrittenA written, formal word for a daily record; in everyday speech people say 「日記」 or 「記録」.
• Related対数たいすうWrittenThe mathematical term for a logarithm; 「ログ」 can also stand for a logarithm in math.

Use 「ログ」 for computer operation or chat logs. Pick 「日記」 for a personal diary, 「日誌」 for a work or duty log, 「ジャーナル」 for a periodical, and 「対数」 for a logarithm in math.

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

1. 丸太まるた。
2. 船舶せんぱくの測程そくてい儀ぎ。
3. 航海こうかい（航空こうくう）日誌にっし。
4. コンピューターを操作そうさした記録きろく。