pipeline vs pipe

pipeline and pipe both are nouns.

Word	Noun	Adjective	Verb	Adverb
pipeline	Yes	No	No	No
pipe	Yes	No	Yes	No

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

pipeline: a pipe used to transport liquids or gases
pipe: a long tube made of metal or plastic that is used to carry water or oil or gas etc.

Other hypernyms of pipeline include pipage, piping.

pipeline (noun)	pipe (noun)
a pipe used to transport liquids or gases	a long tube made of metal or plastic that is used to carry water or oil or gas etc.
gossip spread by spoken communication	a tube with a small bowl at one end; used for smoking tobacco
	the flues and stops on a pipe organ
	a tubular wind instrument
	a hollow cylindrical shape