水すい洗せん式しき便べん所じょ

す

い

せ

ん

し

き

べ

ん

じょ

Meanings

1

noun

A toilet that uses water to flush waste; a standard modern toilet.

water

洗wash, inquire into, probe

式style, ceremony, rite

便convenience, facility, excrement

所place, extent

トイレ
トイレ is the general word for toilet/restroom, while 水洗式便所 specifically refers to the flush-type fixture.
便べん所じょ
便所 is a plain word for toilet/lavatory; 水洗式便所 specifies the flush type.

Compound of 水洗式 (flush-type) and 便所 (toilet).