This is the 1208th most frequent Japanese word.
運命
Fate or destiny.
In this sentence, '運命' ('unmei') is used to denote an unavoidable fate or destiny that seems to govern the flow of events.
これは運命なのだ。
This is destiny.
Here, '運命' refers to the life circumstances or future that might seem predetermined but is implied to be changeable with effort.
運命を変える力を信じています。
I believe in the power to change destiny.
In this case, '運命' is used to express a significant event aligned with one's destined path or fortune.