the.com/boarding
The polite stampede to sit on a plane that won't leave without you.
means The process of getting passengers, animals, or students onto a vehicle or into a residential institution.
from From Old English bord, meaning plank or ship's side; to go aboard literally meant stepping onto the wooden deck. Planks became planes, but the word kept floating.
Zone theaterBoarding groups rarely speed anything up meaningfully.
School senseBoarding school means living where you study.
Animal versionBoarding kennels are pet hotels, charges included.
Nautical rootPirates boarding ships gave us the verb.