pleural cavity vs cavity

pleural cavity and cavity both are nouns.

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

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

Other hypernyms of pleural cavity include bodily cavity, cavum.

pleural cavity (noun)	cavity (noun)
the cavity in the thorax that contains the lungs and heart	(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