
Onboard
Joining Action
Often suggests you're joining others already present or moving into a vehicle.

Let's go onboard and join the crew.
Not for Facilities
Don't use 'onboard' to describe objects inside a vehicle, only for people or animals.

The luggage is on the ship, not onboard.
Transition Phase
Implies the moment of transition from not being on a vehicle to being inside it.

She stepped onboard just before the doors closed.
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AboardEmbarkEnlistJoinRecruitRegisterSign onTake on
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