hangar vs repair shed

hangar and repair shed both are nouns.

Word	Noun	Adjective	Verb	Adverb
hangar	Yes	No	No	No
repair shed	Yes	No	No	No

As nouns, hangar and repair shed are synonyms defined as:

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

Other synonyms of hangar include airdock.

hangar (noun)	repair shed (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