chamber vs air lock

chamber and air lock both are nouns.

Word	Noun	Adjective	Verb	Adverb
chamber	Yes	No	Yes	No
air lock	Yes	No	No	No

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

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

chamber (noun)	air lock (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)	air lock (verb)
place in a chamber