労組|ろうそrouso[1]atamadaka (head-high)

1. nounlabor union; labour union; trade union

• Synonym労働組合ろうどうくみあいNeutralThe full, more formal name for a labor union; 「労組」 is its abbreviation, seen often in news headlines.
• SynonymユニオンNeutralA loanword meaning union or alliance; often used in the names of specific unions, as in 「〇〇ユニオン」.
• SynonymトレードユニオンNeutralA loanword for trade union; has a translated feel and is rarely used in everyday Japanese.
• SynonymレーバーユニオンNeutralA loanword for labor union; likewise translation-style and rare in daily use.

「労組」 is the abbreviation, common in news; use the full 「労働組合」 in formal writing. Union names typically use 「ユニオン」, as in 「〇〇ユニオン」. 「トレードユニオン」 and 「レーバーユニオン」 are translation-style and rare in everyday use.

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

1. 労働組合ろうどうくみあいの略称りゃくしょう。