flight vs trajectory

flight and trajectory both are nouns.

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

As nouns, flight and trajectory are synonyms defined as:

flight and trajectory: the path followed by an object moving through space

flight (noun)	trajectory (noun)
an instance of traveling by air	the path followed by an object moving through space
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