urochord vs tunicate

urochord and tunicate both are nouns.

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

As nouns, urochord and tunicate are synonyms defined as:

urochord and tunicate: primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva

Other synonyms of urochord include urochordate.

urochord (noun)	tunicate (noun)
a notochord of a larval tunicate typically confined to the caudal region	primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva
primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva