airdock vs hangar

airdock and hangar both are nouns.

Word	Noun	Adjective	Verb	Adverb
airdock	Yes	No	No	No
hangar	Yes	No	No	No

As nouns, airdock and hangar are synonyms defined as:

airdock and hangar: a large structure at an airport where aircraft can be stored and maintained

Other synonyms of airdock include repair shed.

airdock (noun)	hangar (noun)
a large structure at an airport where aircraft can be stored and maintained	a large structure at an airport where aircraft can be stored and maintained