flight strip vs airstrip

flight strip and airstrip both are nouns.

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

As nouns, flight strip and airstrip are synonyms defined as:

flight strip and airstrip: an airfield without normal airport facilities

Other synonyms of flight strip include landing strip, strip.

flight strip (noun)	airstrip (noun)
an airfield without normal airport facilities	an airfield without normal airport facilities