tympanum vs bodily cavity

tympanum and bodily cavity both are nouns.

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

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

Other hypernyms of tympanum include cavity, cavum.

tympanum (noun)	bodily cavity (noun)
a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it	(anatomy) a natural hollow or sinus within the body
the membrane in the ear that vibrates to sound
the main cavity of the ear; between the eardrum and the inner ear