A mechanism or machinery — the structure or mechanical parts that perform a function.
時計の機構は非常に複雑だ。
The mechanism of the clock is very complex.
機構部品を交換して動作を確認した。
We replaced mechanism parts and checked the operation.
この装置は安全機構が備わっている。
This device has a safety mechanism.
An organization, system, or framework — the structural or institutional arrangement of something.
政府機構の改革が必要だ。
Reform of government organizations is necessary.
その会社の内部機構を詳しく調べた。
We examined the company's internal organizational structure in detail.
評価機構の透明性を高めるべきだ。
The transparency of the evaluation system should be increased.