caisson vs chest

caisson and chest both are nouns.

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

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

caisson (noun)	chest (noun)
large watertight chamber used for construction under water	box with a lid; used for storage; usually large and sturdy
an ornamental sunken panel in a ceiling or dome	furniture with drawers for keeping clothes
a chest to hold ammunition	the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates
a two-wheeled military vehicle carrying artillery ammunition	the front of the trunk from the neck to the abdomen