sea cradle vs polyplacophore

sea cradle and polyplacophore both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea cradle	Yes	No	No	No
polyplacophore	Yes	No	No	No

As nouns, sea cradle and polyplacophore are synonyms defined as:

sea cradle and polyplacophore: primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates

Other synonyms of sea cradle include chiton, coat-of-mail shell.

sea cradle (noun)	polyplacophore (noun)
primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates	primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates