salp vs tunicate

salp and tunicate both are nouns.

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

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

salp: minute floating marine tunicate having a transparent body with an opening at each end
tunicate: primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva

Other hypernyms of salp include urochord, urochordate.

salp (noun)	tunicate (noun)
minute floating marine tunicate having a transparent body with an opening at each end	primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva