兄きょう弟だい会がい社しゃ

きょ

う

だ

い

が

い

しゃ

Meanings

1

noun

A company that belongs to the same corporate group or parent company, often used in business contexts.

elder brother, big brother

弟younger brother, faithful service to elders

会meeting, meet, party

社company, firm, office

子こ会がい社しゃ
子会社 is a subsidiary (controlled by a parent company), while 兄弟会社 refers to companies under the same parent without direct control over each other.
親おや会がい社しゃ
親会社 is the parent company that owns or controls subsidiaries, whereas 兄弟会社 are the sibling companies under that parent.

Compound of 兄弟 (きょうだい, 'siblings') and 会社 (かいしゃ, 'company'), literally 'sibling company'.