cubicle (n) a small room that is made by separating off part of a larger room

- a shower cubicle 

- a changing cubicle (= for example, at a public swimming pool)

- I don't even know my colleague in the next cubicle.

a small room on a ship or boat in which you live or sleep

cabin

a small house or shelter, usually made of wood

He was born in a log cabin in rural Kentucky.

urinal (n) a type of toilet for men that is attached to the wall; a room or building containing urinals

Modern waterless urinals can help to save the environment.