cleavage cavity vs cavity

cleavage cavity and cavity both are nouns.

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

As nouns, cavity is a hypernym of cleavage cavity; that is, cavity is a word with a broader meaning than cleavage cavity:

Other hypernyms of cleavage cavity include bodily cavity, cavum.

cleavage cavity (noun)	cavity (noun)
the fluid-filled cavity inside a blastula	(anatomy) a natural hollow or sinus within the body
	a sizeable hole (usually in the ground)
	soft decayed area in a tooth; progressive decay can lead to the death of a tooth
	space that is surrounded by something