vault vs burial chamber

vault and burial chamber both are nouns.

Word	Noun	Adjective	Verb	Adverb
vault	Yes	No	Yes	No
burial chamber	Yes	No	No	No

As nouns, burial chamber is a hypernym of vault; that is, burial chamber is a word with a broader meaning than vault:

Other hypernyms of vault include sepulcher, sepulchre, sepulture.

vault (noun)	burial chamber (noun)
the act of jumping over an obstacle	a chamber that is used as a grave
an arched brick or stone ceiling or roof
a burial chamber (usually underground)
a strongroom or compartment (often made of steel) for safekeeping of valuables

vault (verb)	burial chamber (verb)
bound vigorously
jump across or leap over (an obstacle)