segmentation cavity vs cleavage cavity

segmentation cavity and cleavage cavity both are nouns.

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

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

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

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

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