This is the 3119th most frequent Russian word.
концерна
A "concern" or large industrial/business group.
The word 'концерн' here is used to refer to a large business or industrial organization.
Этот автомобильный концерн производит высококачественные машины.
This automotive concern produces high-quality cars.
In this sentence, 'концерн' again means a large corporation or company, specifically referencing its executive leadership.
Генеральный директор концерна анонсировал новый проект.
The general director of the concern announced a new project.
Here, 'концерн' refers to the entirety of the corporation, emphasizing its global scope.