This is the 2295th most frequent French word.
magnitude
The greatness of size, extent, or importance.
Here, 'magnitude' refers to the scale or size of the earthquake as measured scientifically.
La magnitude du tremblement de terre a surpris tout le monde.
The magnitude of the earthquake surprised everyone.
In this instance, 'magnitude' denotes the extent or importance of the changes.
Ils n'ont pas encore compris la magnitude des changements nécessaires.
They have not yet understood the magnitude of the necessary changes.
This context uses 'magnitude' in astronomy, indicating the brightness of celestial objects.