obeisance, follow, accompany, attend on
陪 centers on being in a subordinate or accompanying role: showing respect through obeisance, following someone, or attending on them as a companion or aide.
陪 combines ⻖ (mound, hill) with 咅, which likely contributes the sound. The mound radical may suggest a secondary or supporting position, fitting the idea of accompanying or attending.
The left side ⻖ looks like a hill or mound, and the right side 咅 suggests a person standing beside it. Picture someone humbly standing by a hill, ready to follow and attend to a superior.
For バイ, imagine a loyal attendant saying 'bye' as they follow their master: bye -> バイ, and they accompany them with obeisance.
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jury
grand jury
petty jury; petit jury
riding in the same carriage (car) (with a superior); attending on (one's superior) in the same carriage
retainer; attending on the nobility
being served food outside the meditation hall (at a Zen temple)
subsidiary burial mound (Kofun period); satellite burial mound
jury system
jury system
juror; jury member
jury box
trial by jury; jury trial
sitting with one's superior; in attendance with one's superior
associate judge; associate justice
waiting upon; attending on; accompanying
serving food (to a nobleman); nobleman's server
rear vassal; daimyo's retainer
viewing something in the company of one's superior
secondary capital city (of historical China)
dining with one's superior; dining with one's superiors