airfield vs runway

airfield and runway both are nouns.

Word	Noun	Adjective	Verb	Adverb
airfield	Yes	No	No	No
runway	Yes	No	No	No

airfield (noun)	runway (noun)
a place where planes take off and land	a strip of level paved surface where planes can take off and land
	a narrow platform extending from the stage into the audience in a theater or nightclub etc.
	a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll
	a chute down which logs can slide