メカmeka

1. nounmechanism; mechanics; machines; (mechanical) equipment
2. nounmechanic

• SynonymメカニズムNeutralLoanword for a mechanism or how something works, also a method or technique. 「メカ」 can cover a machine's inner workings, but usually means the machine itself.
• Synonym機構きこうWrittenWritten, formal prose for a structure or framework — an organization's setup or a machine's inner workings. 「メカ」 is the casual everyday word.
• Synonym機械きかいNeutralThe standard, most common word for a machine. 「メカ」 is a colloquial short form that often carries a hobbyist flavor, as in 「メカ好き」.
• Synonym仕掛けしかけNeutralA device or mechanism with a touch of clever design; it also means a trap or scheme. 「メカ」 points to the machine itself.
• Related仕組みしくみNeutralA structure or the way something works; common in daily use and not limited to machines. 「メカ」 is restricted to machines.
• RelatedからくりNeutralA clever contrivance or device, and by extension hidden workings or a trick, as in 「からくり人形」. 「メカ」 means modern machinery and has no trick sense.

Use 「メカ」 colloquially for machines, robots or anything mechanical, as in 「メカに強い」 and 「巨大メカ」. For how something works, pick 「メカニズム」 or 「仕組み」; for a machine itself, 「機械」 is the standard choice.

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

1. 機械きかいや装置そうちの内部ないぶで動うごく部品ぶひんの組み合くみあわせ、またはそれら全体ぜんたい。
2. 機械きかいや自動車じどうしゃなどを修理しゅうり・整備せいびする技術者ぎじゅつしゃ。