完成します（かんせいします、kanseishimasu）
- to complete

The Japanese word 完成します ([完成します]) means "to complete," "to finish," or "to be completed." It implies the successful culmination of a process, task, or project. It suggests that something has reached its final state or has been brought to its intended end. The word often carries a sense of achievement and the ending of a period of work or effort.

⚫︎宿題を完成します。 Translation: I will finish my homework. ⚫︎新しい家が完成します。 Translation: The new house will be completed. ⚫︎プロジェクトが来週完成します。 Translation: The project will be completed next week.

⚫︎完成します ([完成します]) is a formal verb and is suitable for both written and spoken Japanese. ⚫︎It is typically used when referring to the completion of something tangible (like a building) or intangible (like a project or a work of art). ⚫︎It can be used in both the active ("I will complete...") and passive voice ("It will be completed...").

⚫︎The word is typically written with the kanji 完成 and the hiragana suffix します: 完成します. ⚫︎完成 is composed of the kanji 完 (kan) meaning "completion" or "perfection" and 成 (sei) meaning "to become" or "to achieve". ⚫︎The okurigana (hiragana following the kanji) are usually します. ⚫︎Variations include different conjugations of the verb, such as 完成しました (kansei shimashita - completed) and 完成する (kansei suru - to complete/will complete).

⚫︎終わります (owarimasu) - to finish, to end. (More general than 完成します [完成します]) ⚫︎出来上がります (dekiagarimasu) - to be finished, to be completed (implies being made or produced). ⚫︎終了します (shūryō shimasu) - to end, to conclude. (Often used for official events or processes).

⚫︎始まります (hajimarimasu) - to begin, to start. ⚫︎開始します (kaishi shimasu) - to start, to commence.

このレポートは、今日中に完成します。 ・Translation: I will complete this report by the end of today. ・Explanation: This sentence uses 完成します [完成します] to indicate the speaker's intention to finish the report within a specific timeframe.

建設中のビルは来年完成する予定です。 ・Translation: The building under construction is scheduled to be completed next year. ・Explanation: This sentence uses the future tense of 完成します [完成する] to talk about the completion date of a building.

The word 完成 is a compound word derived from Chinese. The kanji 完 represents "complete" or "perfect," and the kanji 成 means "to become" or "to achieve." The verb suffix します is a polite verb ending, making the entire phrase mean "to complete" or "to finish" in a polite and formal way.