flight vs sailing

flight and sailing both are nouns.

Word	Noun	Adjective	Verb	Adverb
flight	Yes	No	Yes	No
sailing	Yes	No	No	No

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

flight (noun)	sailing (noun)
an instance of traveling by air	riding in a sailboat
the act of escaping physically	the work of a sailor
a scheduled trip by plane between designated airports	the departure of a vessel from a port
a stairway (set of steps) between one floor or landing and the next	the activity of flying a glider
passing above and beyond ordinary bounds
an air force unit smaller than a squadron
a formation of aircraft in flight
a flock of flying birds
the path followed by an object moving through space