pipeline vs comment

pipeline and comment both are nouns.

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

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

Other hypernyms of pipeline include gossip, scuttlebutt.

pipeline (noun)	comment (noun)
a pipe used to transport liquids or gases	a statement that expresses a personal opinion or belief or adds information
gossip spread by spoken communication	a written explanation or criticism or illustration that is added to a book or other textual material
	a report (often malicious) about the behavior of other people

pipeline (verb)	comment (verb)
	make or write a comment on
	provide interlinear explanations for words or phrases
	explain or interpret something