How to say "Completion" in Japanese

When translating "completion" into Japanese, you must choose carefully between 完結 and 完遂. In Japanese, 完結 (かんけつ (kanketsu)) is typically associated with "completion, conclusion, bringing to an end" (Syllabus Level: N2) and represents Often used for stories, series, projects, or works that reach their final stage and are brought to a definitive end.. On the other hand, 完遂 (かんすい (kansui)) maps to "completion, accomplishment, achievement (of a task, duty, etc.)" (Syllabus Level: N1) and represents Implies successfully finishing a task or goal, often one that was difficult or required persistence. It has a nuance of completing something to the very end. 困難な目標や任務を最後までやり遂げること、達成することを指します。強い意志や努力が伴うニュアンスがあります。. A literal translation of "completion" can often sound unnatural to native Japanese speakers if mixed up!