abdominal cavity vs cavity

abdominal cavity and cavity both are nouns.

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

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

abdominal cavity: the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm
cavity: (anatomy) a natural hollow or sinus within the body

Other hypernyms of abdominal cavity include bodily cavity, cavum.

abdominal cavity (noun)	cavity (noun)
the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm	(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