Fasciolopsis buski vs fluke

Fasciolopsis buski and fluke both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fasciolopsis buski	Yes	No	No	No
fluke	Yes	No	No	No

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

Fasciolopsis buski: fluke that is parasitic on humans and swine; common in eastern Asia
fluke: parasitic flatworms having external suckers for attaching to a host

Other hypernyms of Fasciolopsis buski include trematode, trematode worm.

Fasciolopsis buski (noun)	fluke (noun)
fluke that is parasitic on humans and swine; common in eastern Asia	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