chamber vs airlock

chamber and airlock both are nouns.

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

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

chamber: a natural or artificial enclosed space
airlock: a chamber that provides access to space where air is under pressure

chamber (noun)	airlock (noun)
a natural or artificial enclosed space	a chamber that provides access to space where air is under pressure
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

chamber (verb)	airlock (verb)
place in a chamber