caisson vs chamber

caisson and chamber both are nouns.

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

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

caisson (noun)	chamber (noun)
large watertight chamber used for construction under water	a natural or artificial enclosed space
an ornamental sunken panel in a ceiling or dome	a room used primarily for sleeping
a chest to hold ammunition	a room where a judge transacts business
a two-wheeled military vehicle carrying artillery ammunition	an enclosed volume in the body
	a deliberative or legislative or administrative or judicial assembly

caisson (verb)	chamber (verb)
	place in a chamber