sea gooseberry vs comb jelly

sea gooseberry and comb jelly both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea gooseberry	Yes	No	No	No
comb jelly	Yes	No	No	No

As nouns, comb jelly is a hypernym of sea gooseberry; that is, comb jelly is a word with a broader meaning than sea gooseberry:

sea gooseberry: ctenophore having a rounded body with longitudinal rows of cilia
comb jelly: biradially symmetrical hermaphroditic solitary marine animals resembling jellyfishes having for locomotion eight rows of cilia arranged like teeth in a comb

Other hypernyms of sea gooseberry include ctenophore.

sea gooseberry (noun)	comb jelly (noun)
ctenophore having a rounded body with longitudinal rows of cilia	biradially symmetrical hermaphroditic solitary marine animals resembling jellyfishes having for locomotion eight rows of cilia arranged like teeth in a comb