This is the 1964th most frequent French word.
stress
A state of mental or emotional strain or tension.
In this sentence, 'stress' is used as a noun to describe the emotional tension one might experience before a significant event.
Je ressens beaucoup de stress avant mon examen.
I feel a lot of stress before my exam.
Here, 'stress' again is employed as a noun to denote the mental strain that the subject seeks to handle through a specific method.
Elle essaie de gérer son stress en faisant du yoga.
She tries to manage her stress by doing yoga.
In this instance, 'stress' is applied as a noun to represent the chronic sense of pressure or strain present in everyday circumstances.