pipe vs reed pipe

pipe and reed pipe both are nouns.

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

As nouns, reed pipe is a hyponym of pipe; that is, reed pipe is a word with a more specific, narrower meaning than pipe:

Other hyponyms of pipe include flue, flue pipe, labial pipe, organ stop.

pipe (noun)	reed pipe (noun)
a long tube made of metal or plastic that is used to carry water or oil or gas etc.	organ pipe with a vibrating reed
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