larvacean vs tunicate

larvacean and tunicate both are nouns.

Word	Noun	Adjective	Verb	Adverb
larvacean	Yes	No	No	No
tunicate	Yes	No	No	No

As nouns, tunicate is a hypernym of larvacean; that is, tunicate is a word with a broader meaning than larvacean:

larvacean: any member of the class Larvacea
tunicate: primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva

Other hypernyms of larvacean include urochord, urochordate.

larvacean (noun)	tunicate (noun)
any member of the class Larvacea	primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva