chamber vs sepulture

chamber and sepulture both are nouns.

Word	Noun	Adjective	Verb	Adverb
chamber	Yes	No	Yes	No
sepulture	Yes	No	No	No

As nouns, sepulture is a hyponym of chamber; that is, sepulture is a word with a more specific, narrower meaning than chamber:

chamber (noun)	sepulture (noun)
a natural or artificial enclosed space	a chamber that is used as a grave
a room used primarily for sleeping	the ritual placing of a corpse in a grave
a room where a judge transacts business
an enclosed volume in the body
a deliberative or legislative or administrative or judicial assembly

chamber (verb)	sepulture (verb)
place in a chamber