airport vs airdrome

airport and airdrome both are nouns.

Word	Noun	Adjective	Verb	Adverb
airport	Yes	No	No	No
airdrome	Yes	No	No	No

As nouns, airport and airdrome are synonyms defined as:

airport and airdrome: an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo

Other synonyms of airport include aerodrome, drome.

airport (noun)	airdrome (noun)
an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo	an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo