成果

The word "成果" specifically refers to a positive outcome, achievement, or "fruit" of one's labor. Unlike the general term "結果" (kekka), which is neutral and can describe any result (positive, negative, or accidental), "成果" implies that a conscious effort, a specific process, or a period of hard work was invested to reach that goal.

In practical usage, it is frequently employed in professional, academic, or athletic contexts. For example, while you would use "結果" for the outcome of a coin toss or a failed exam, you would use "成果" for the successful completion of a research project or the increase in sales due to a new strategy.

Using "成果" in a context where no effort was involved, or where the result is negative, would sound unnatural to a native speaker. It carries a strong connotation of "value added" through persistence and activity.