firing vs discharge

firing and discharge both are nouns.

Word	Noun	Adjective	Verb	Adverb
firing	Yes	No	No	No
discharge	Yes	No	Yes	No

As nouns, firing and discharge are synonyms defined as:

firing and discharge: the termination of someone's employment (leaving them free to depart)

Other synonyms of firing include dismissal, dismission, liberation, release, sack, sacking.

As nouns, firing and discharge are synonyms defined as:

Other synonyms of firing include firing off.

firing (noun)	discharge (noun)
the act of setting something on fire	the act of discharging a gun
the termination of someone's employment (leaving them free to depart)	the termination of someone's employment (leaving them free to depart)
the act of discharging a gun	a formal written statement of relinquishment
the act of firing weapons or artillery at an enemy	the act of venting
	the sudden giving off of energy
	the pouring forth of a fluid
	electrical conduction through a gas in an applied electric field
	any of several bodily processes by which substances go out of the body
	a substance that is emitted or released

firing (verb)	discharge (verb)
	eliminate (a substance)
	become empty or void of its content
	pronounce not guilty of criminal charges
	release from military service
	cause to go off
	go off or discharge
	pour forth or release
	remove the charge from
	remove (cargo, people, etc.) from and leave
	complete or carry out
	free from obligations or duties