noun
hierarchical relationship; pecking order; vertical relationship
Refers to the relationship between people of different status or rank, such as senior-junior, boss-subordinate, or parent-child. The term 'hyponymy' is a rare linguistic use.
日本の会社では、上下関係がはっきりしている。
In Japanese companies, the hierarchical relationships are clearly defined.
彼は上下関
He doesn't care about rank and talks to everyone like a friend.