This is the 2876th most frequent French word.
dépense
Expense; expenditure.
Here, "dépense" refers to a monetary expenditure incurred for a specific activity, in this case, a trip.
La dépense pour le voyage a été très élevée.
The expense for the trip was very high.
Here, "dépense" is used figuratively to describe the consumption or use of non-monetary resources, in this case, energy.
Cette activité demande une grande dépense d'énergie.
This activity requires a great expenditure of energy.
In this sentence, "dépenses" denotes recurring monetary outflows or costs associated with one's living expenses.