art vs airmanship

art and airmanship both are nouns.

Word	Noun	Adjective	Verb	Adverb
art	Yes	No	No	No
airmanship	Yes	No	No	No

As nouns, airmanship is a hyponym of art; that is, airmanship is a word with a more specific, narrower meaning than art:

art: a superior skill that you can learn by study and practice and observation
airmanship: the art of operating aircraft

art (noun)	airmanship (noun)
the creation of beautiful or significant things	the art of operating aircraft
the products of human creativity; works of art collectively
a superior skill that you can learn by study and practice and observation
photographs or other visual representations in a printed publication