flight vs gliding

flight and gliding both are nouns.

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

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

flight (noun)	gliding (noun)
an instance of traveling by air	the activity of flying a glider
the act of escaping physically
a scheduled trip by plane between designated airports
a stairway (set of steps) between one floor or landing and the next
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