同期（どうき、douki）
- synchronization

The Japanese word 同期 同期 primarily refers to "synchronization" or "simultaneousness." However, it carries a few distinct meanings depending on the context. It can also refer to "people who enter a company, school, or organization at the same time" and is very frequently used in this context. It suggests a shared experience of starting something together. In a more technical context, it relates to the concept of "synchronization" in data processing or software.

⚫︎ あの二人は、同期です。 Translation: Those two are classmates/people who started at the same time. ⚫︎ データの同期には時間がかかります。 Translation: It takes time to synchronize the data. ⚫︎ 彼女は私の会社での同期です。 Translation: She is my colleague who joined the company at the same time as me.

⚫︎ When referring to people, use 同期 同期 to describe individuals who started their jobs, school, or training around the same time. This is very common in professional settings and among students. ⚫︎ When describing data or processes, 同期 同期 signifies actions happening at the same time or a process of aligning data or information. ⚫︎ You would use this word in conversations to discuss your colleagues, friends, or to talk about tech-related topics like data synchronization.

⚫︎ 同期 同期 is usually written in kanji 同期. ⚫︎ The reading is どうき in hiragana. ⚫︎ There is no variation in okurigana.

⚫︎ 同時 (どうじ) - "simultaneous," "at the same time" ⚫︎ 同時性 (どうじせい) - "synchronicity" ⚫︎ 仲間 (なかま) - "fellows," "comrades" (when referring to people who started together) ⚫︎ 同僚 (どうりょう) - "colleague" (specifically when referring to people who work together)

⚫︎ 非同期 (ひどうき) - "asynchronous" (opposite of synchronization in technical contexts) ⚫︎ 先輩 (せんぱい) - "senior," "one's elder" (when referring to someone who started earlier) ⚫︎ 後輩 (こうはい) - "junior," "one's junior" (when referring to someone who started later)

私と山田さんは、大学の入学同期です。 ・Translation: Yamada and I are classmates who entered university at the same time. ・Explanation: This sentence illustrates how 同期 同期 is used to describe a shared experience (entering university) with another person.

このアプリは、クラウドとデータの同期を自動で行います。 ・Translation: This app automatically synchronizes data with the cloud. ・Explanation: This sentence demonstrates 同期 同期's use in a technical sense, referring to the synchronization of data.

The word 同期 同期 is formed from two kanji: 同 (どう) meaning "same" or "together" and 期 (き) meaning "period," "time," or "term." Together, they create the idea of "same period," "same time," or "synchronization." This explains its dual meanings related to both simultaneous actions and people who share the same starting period in a company or school.