Bus
Bus turns up in 2 fields: electrotechnology, automotive. Here is what it means to the people in each one.
Bus in electrotechnology
Rigid conductor or common node in a substation or switchboard where several circuits connect and share power.
A bus, or busbar, is a bar, tube or node to which incoming supplies and outgoing feeders connect, usually copper or aluminium carried on insulators. Substation layouts are named by their bus arrangement: single bus, double bus, main and transfer, ring bus, breaker-and-a-half. In network studies a bus is any node with a voltage, so a load-flow model counts buses rather than physical bars.
"Both transformers are on the 11 kV bus with the coupler closed, open it and each half carries its own load."
Bus in automotive
A large commercial vehicle designed to carry many passengers, or a slang term for a sluggish car.
A bus is a heavy-duty commercial passenger vehicle built on a truck-style chassis with air brakes and heavy suspension. In automotive shop slang, bus is also a derogatory nickname for a large, poorly handling, or incredibly slow passenger car, particularly an oversized SUV or a full-size van that feels ponderous to drive.
"I hate test-driving that customer's Suburban, it steers like a bus and takes up two bays."