Air passage and Snorkel

Air passage noun - A duct that provides ventilation (as in mines).

Snorkel and air passage are semantically related. In some cases you can replace term "Snorkel" with "Air passage", this terms are similar.

Snorkel noun - Air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time.

Air passage and snorkel are semantically related. Sometimes you can use "Air passage" instead a noun "Snorkel".

Nearby Word: snorkelling