flight strip vs airfield

flight strip and airfield both are nouns.

Word	Noun	Adjective	Verb	Adverb
flight strip	Yes	No	No	No
airfield	Yes	No	No	No

As nouns, airfield is a hypernym of flight strip; that is, airfield is a word with a broader meaning than flight strip:

Other hypernyms of flight strip include field, flying field, landing field.

flight strip (noun)	airfield (noun)
an airfield without normal airport facilities	a place where planes take off and land