flue vs projection

flue and projection both are nouns.

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

As nouns, projection is a hypernym of flue; that is, projection is a word with a broader meaning than flue:

flue (noun)	projection (noun)
a conduit to carry off smoke	the act of expelling or projecting or ejecting
organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip	the act of projecting out from something
flat bladelike projection on the arm of an anchor	any structure that branches out from a central support
	the representation of a figure or solid on a plane as it would look from a particular direction
	a planned undertaking
	a prediction made by extrapolating from past observations
	the projection of an image from a film onto a screen
	the acoustic phenomenon that gives sound a penetrating quality
	(psychiatry) a defense mechanism by which your own traits and emotions are attributed to someone else
	any solid convex shape that juts out from something