Lavatory vs. Washroom vs. Bathroom vs. Restroom

Lavatory

LAVATORY

A wash basin

WASHROOM

A room with a toilet (sewer or septic tank compatible) and wash basin

Bathroom

BATHROOM

A room with a toilet (sewer or septic tank compatible), sink (plumbling compatible), and bath (or shower)

Restroom: Example 1

Restroom: Example 2

RESTROOM

A room with a toilet (sewer or septic tank compatible) and sink (plumbling compatible) (euphamism for bathroom)

The term “restroom” derived from up-scale restaurants, theaters, and performing facilities in the early 1900s through to the middle of the century providing comfortable chairs or sofas, located within or in a room directly adjacent to the actual toilet and sink facilities.

AND JUST FOR FUN:

Chamber Pot; circa 1800s (Style)

Japanese Chamber Pot; circa 1600s

CHAMBER POT

(pretty self-explanatory)

Latrin

LATRIN

A seat over a hole (cesspit) used to collect waste

Outhouse

OUTHOUSE

A building with a seat over a hole (cesspit) used to collect waste