drainpipe vs pipage

drainpipe and pipage both are nouns.

Word	Noun	Adjective	Verb	Adverb
drainpipe	Yes	No	No	No
pipage	Yes	No	No	No

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

drainpipe: a pipe through which liquid is carried away
pipage: a long tube made of metal or plastic that is used to carry water or oil or gas etc.

Other hypernyms of drainpipe include pipe, piping.

drainpipe (noun)	pipage (noun)
a pipe through which liquid is carried away	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