flue vs lamp chimney

flue and lamp chimney both are nouns.

Word	Noun	Adjective	Verb	Adverb
flue	Yes	No	No	No
lamp chimney	Yes	No	No	No

As nouns, lamp chimney is a hyponym of flue; that is, lamp chimney is a word with a more specific, narrower meaning than flue:

Other hyponyms of flue include chimney, chimneystack, chimney.

flue (noun)	lamp chimney (noun)
a conduit to carry off smoke	a glass flue surrounding the wick of an oil lamp
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