schistosome vs trematode

schistosome and trematode both are nouns.

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

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

schistosome: flatworms parasitic in the blood vessels of mammals
trematode: parasitic flatworms having external suckers for attaching to a host

Other hypernyms of schistosome include fluke, trematode worm.

schistosome (noun)	trematode (noun)
flatworms parasitic in the blood vessels of mammals	parasitic flatworms having external suckers for attaching to a host