flue pipe vs flue

flue pipe and flue both are nouns.

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

As nouns, flue pipe and flue are synonyms defined as:

flue pipe and flue: organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip

Other synonyms of flue pipe include labial pipe.

flue pipe (noun)	flue (noun)
organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip	a conduit to carry off smoke
	organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip
	flat bladelike projection on the arm of an anchor