middle ear vs bodily cavity

middle ear and bodily cavity both are nouns.

Word	Noun	Adjective	Verb	Adverb
middle ear	Yes	No	No	No
bodily cavity	Yes	No	No	No

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

middle ear: the main cavity of the ear; between the eardrum and the inner ear
bodily cavity: (anatomy) a natural hollow or sinus within the body

Other hypernyms of middle ear include cavity, cavum.

middle ear (noun)	bodily cavity (noun)
the main cavity of the ear; between the eardrum and the inner ear	(anatomy) a natural hollow or sinus within the body