flying field vs airfield

flying field and airfield both are nouns.

Word	Noun	Adjective	Verb	Adverb
flying field	Yes	No	No	No
airfield	Yes	No	No	No

As nouns, flying field and airfield are synonyms defined as:

Other synonyms of flying field include field, landing field.

flying field (noun)	airfield (noun)
a place where planes take off and land	a place where planes take off and land