schistosome vs fluke

schistosome and fluke both are nouns.

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

As nouns, fluke is a hypernym of schistosome; that is, fluke is a word with a broader meaning than schistosome:

Other hypernyms of schistosome include trematode, trematode worm.

schistosome (noun)	fluke (noun)
flatworms parasitic in the blood vessels of mammals	parasitic flatworms having external suckers for attaching to a host
	either of the two lobes of the tail of a cetacean
	flat bladelike projection on the arm of an anchor
	a barb on a harpoon or arrow
	a stroke of luck