cleavage cavity vs segmentation cavity

cleavage cavity and segmentation cavity both are nouns.

Word	Noun	Adjective	Verb	Adverb
cleavage cavity	Yes	No	No	No
segmentation cavity	Yes	No	No	No

As nouns, cleavage cavity and segmentation cavity are synonyms defined as:

cleavage cavity and segmentation cavity: the fluid-filled cavity inside a blastula

Other synonyms of cleavage cavity include blastocele, blastocoel, blastocoele.

cleavage cavity (noun)	segmentation cavity (noun)
the fluid-filled cavity inside a blastula	the fluid-filled cavity inside a blastula