This is the 528th most frequent Hebrew word.
ניסיון
Attempt, trial, or experience.
Here, 'ניסיון' is used to refer to professional experience in a particular domain.
אני מחפש ניסיון בעבודה בתחום הטכנולוגיה.
I am looking for experience in the technology field.
In this context, 'ניסיון' again refers to accumulated expertise or practice in a professional area.
יש לו ניסיון רב בניהול פרויקטים.
He has significant experience in project management.
Here, 'ניסיון' is used in the sense of a single attempt or trial at doing something, reflecting its other semantic usage.