echinococcus vs cestode

echinococcus and cestode both are nouns.

Word	Noun	Adjective	Verb	Adverb
echinococcus	Yes	No	No	No
cestode	Yes	No	No	No

As nouns, cestode is a hypernym of echinococcus; that is, cestode is a word with a broader meaning than echinococcus:

echinococcus: tapeworms whose larvae are parasitic in humans and domestic animals
cestode: ribbonlike flatworms that are parasitic in the intestines of humans and other vertebrates

Other hypernyms of echinococcus include tapeworm.

echinococcus (noun)	cestode (noun)
tapeworms whose larvae are parasitic in humans and domestic animals	ribbonlike flatworms that are parasitic in the intestines of humans and other vertebrates