flue vs fluke

flue and fluke both are nouns.

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

As nouns, flue and fluke are synonyms defined as:

flue (noun)	fluke (noun)
a conduit to carry off smoke	parasitic flatworms having external suckers for attaching to a host
organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip	either of the two lobes of the tail of a cetacean
flat bladelike projection on the arm of an anchor	flat bladelike projection on the arm of an anchor
	a barb on a harpoon or arrow
	a stroke of luck