torpedo tube vs tubing

torpedo tube and tubing both are nouns.

Word	Noun	Adjective	Verb	Adverb
torpedo tube	Yes	No	No	No
tubing	Yes	No	No	No

As nouns, tubing is a hypernym of torpedo tube; that is, tubing is a word with a broader meaning than torpedo tube:

torpedo tube: a tube near the waterline of a vessel through which a torpedo is fired
tubing: conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases

Other hypernyms of torpedo tube include tube.

torpedo tube (noun)	tubing (noun)
a tube near the waterline of a vessel through which a torpedo is fired	conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases