IPA: //ˈmoʊtərˌbʌs//
KK: /ˈmoʊtərˌbʌs/
A type of bus that carries passengers and is powered by an engine.
The motorbus arrived at the station on time, ready to take passengers to their destination.
Motorbus → It is formed from "motor" (from Latin "movere", meaning to move) and "bus" (from Latin "omnibus", meaning for all). The word "motorbus" refers to a vehicle that moves and is designed to carry many passengers.
Think of a vehicle that 'moves' ('motor') and is meant for 'everyone' ('bus') — that's why a motorbus is a bus that moves people.
No commonly confused words.