This is the 713th most frequent Russian word.
комплекса
The Russian word "комплекса" means "complex" (a set of interconnected parts or a psychological complex, depending on context).
As a noun related to a physical structure or establishment.
Дети играли на территории игрового комплекса.
The children played in the area of the play complex.
As a noun representing a set or collection designed for a particular purpose.
Существование комплекса упражнений помогает в достижении физических целей.
The existence of an exercise complex helps in achieving physical goals.
Used figuratively to describe a psychological or emotional condition.