ballistic trajectory vs ballistics

ballistic trajectory and ballistics both are nouns.

Word	Noun	Adjective	Verb	Adverb
ballistic trajectory	Yes	No	No	No
ballistics	Yes	No	No	No

As nouns, ballistic trajectory and ballistics are synonyms defined as:

ballistic trajectory and ballistics: the trajectory of an object in free flight

ballistic trajectory (noun)	ballistics (noun)
the trajectory of an object in free flight	the science of flight dynamics
	the trajectory of an object in free flight