liver fluke vs fluke

liver fluke and fluke both are nouns.

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

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

liver fluke: flatworm parasitic in liver and bile ducts of domestic animals and humans
fluke: parasitic flatworms having external suckers for attaching to a host

Other hypernyms of liver fluke include trematode, trematode worm.

liver fluke (noun)	fluke (noun)
flatworm parasitic in liver and bile ducts of domestic animals and humans	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