This is the 2592nd most frequent Russian word.
стресса
The Russian word "стресса" means "stress" (a state of mental or emotional strain).
The word 'стресса' here is in the genitive case, used as part of the construction 'много стресса' (a lot of stress) to indicate quantity.
Он испытывал много стресса перед экзаменом.
He experienced a lot of stress before the exam.
The word 'стресса' is in the genitive case, used in the possessive construction 'уровень стресса' (level of stress) to describe the specific level being referenced.
После отдыха уровень стресса снизился.
After resting, the level of stress decreased.
The word 'стрессом' is in the instrumental case, used as part of the construction 'управление стрессом' (managing stress) to indicate the means by which something is done.