burial chamber vs chamber

burial chamber and chamber both are nouns.

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

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

Other hypernyms of burial chamber include grave, tomb.

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

burial chamber (verb)	chamber (verb)
	place in a chamber