pelvic cavity vs bodily cavity

pelvic cavity and bodily cavity both are nouns.

Word	Noun	Adjective	Verb	Adverb
pelvic cavity	Yes	No	No	No
bodily cavity	Yes	No	No	No

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

pelvic cavity: the space bounded by the bones of the pelvis and containing the pelvic viscera
bodily cavity: (anatomy) a natural hollow or sinus within the body

Other hypernyms of pelvic cavity include cavity, cavum.

pelvic cavity (noun)	bodily cavity (noun)
the space bounded by the bones of the pelvis and containing the pelvic viscera	(anatomy) a natural hollow or sinus within the body