tobacco pipe vs tubing

tobacco pipe and tubing both are nouns.

Word	Noun	Adjective	Verb	Adverb
tobacco pipe	Yes	No	No	No
tubing	Yes	No	No	No

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

tobacco pipe: a tube with a small bowl at one end; used for smoking tobacco
tubing: conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases

Other hypernyms of tobacco pipe include tube.

tobacco pipe (noun)	tubing (noun)
a tube with a small bowl at one end; used for smoking tobacco	conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases