IPA: /kəmˈpænjənˌweɪ/
KK: /kəmˈpænjənˌweɪ/
A staircase on a ship that connects the upper deck to the lower areas or cabins.
The crew climbed down the companionway to reach their sleeping quarters.
Companionway is formed from "companion" (from Latin "companio", meaning one who eats bread with another) and "way" (from Old English "weg", meaning a path or road). The term refers to a passage or stairway leading to the area where companions gather, particularly on a ship.
Think of 'companions' sharing a meal ('companion') and a 'path' ('way') leading to where they gather. This helps you remember that a companionway is a passage leading to where friends come together.
No commonly confused words.