This is the 8069th most frequent Japanese word.
完結
"Completion" or "conclusion."
完結 is used here to indicate the completion or conclusion of a narrative.
物語は完結を迎えた。
The story has reached its conclusion.
完結 is used here to signify the full completion or finalization of a task or project.
このプロジェクトが完結するまでにはまだ時間がかかります。
It will still take some time before this project reaches completion.
完結 is used here to describe the conclusion or ending of an event or work, in this case a movie.