This is the 847th most frequent Japanese word.
本社
Head office; main office.
Here, '本社' signifies the headquarters as a place of employment.
本社勤務になりました。
I have been assigned to work at the headquarters.
In this context, '本社' indicates the headquarters as the decision-making entity of the organization.
本社の方針に従うべきです。
We should follow the headquarters' policies.
In this sentence, '本社' is used to refer to the main office or headquarters of a company.