riser pipeline vs pipage

riser pipeline and pipage both are nouns.

Word	Noun	Adjective	Verb	Adverb
riser pipeline	Yes	No	No	No
pipage	Yes	No	No	No

As nouns, pipage is a hypernym of riser pipeline; that is, pipage is a word with a broader meaning than riser pipeline:

riser pipeline: a vertical pipe in a building
pipage: a long tube made of metal or plastic that is used to carry water or oil or gas etc.

Other hypernyms of riser pipeline include pipe, piping.

riser pipeline (noun)	pipage (noun)
a vertical pipe in a building	a long tube made of metal or plastic that is used to carry water or oil or gas etc.
	a fee charged for the use of pipes