えんとつ煙突entotsu
1.

A structural device designed to expel smoke or gas from a building or vessel, often resembling a tall, cylindrical shape that serves a dual purpose of ventilation and exhaust.

2.

A term used informally among taxi drivers to describe a deceptive practice where a driver picks up a passenger while still displaying an empty car indicator, thereby manipulating fare charges.

Example:

あの煙突はとても高い。

えんとつそうじ煙突掃除entotsusouji
1.

The process of cleaning soot and debris from chimneys to ensure proper airflow and prevent fire hazards.

2.

The act of removing accumulated materials inside a chimney to maintain safe and efficient heating systems.

3.

A maintenance task that involves inspecting and clearing chimneys to enhance the safety and performance of fireplaces or heating appliances.