release vs discharge

release and discharge both are nouns.

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

As nouns, release and discharge are synonyms defined as:

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

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

As nouns, release and discharge are synonyms defined as:

Other synonyms of release include waiver.

As verbs, release and discharge are synonyms defined as:

Other synonyms of release include eject, exhaust, expel.

As verbs, discharge is a hyponym of release; that is, discharge is a word with a more specific, narrower meaning than release:

release (noun)	discharge (noun)
activity that frees or expresses creative energy or emotion	the act of discharging a gun
the act of liberating someone or something	the termination of someone's employment (leaving them free to depart)
the termination of someone's employment (leaving them free to depart)	a formal written statement of relinquishment
the act of allowing a fluid to escape	the act of venting
a formal written statement of relinquishment	the sudden giving off of energy
(music) the act or manner of terminating a musical phrase or tone	the pouring forth of a fluid
merchandise issued for sale or public showing (especially a record or film)	electrical conduction through a gas in an applied electric field
a device that when pressed will release part of a mechanism	any of several bodily processes by which substances go out of the body
an announcement distributed to members of the press in order to supplement or replace an oral presentation	a substance that is emitted or released
a legal document evidencing the discharge of a debt or obligation
euphemistic expressions for death
a process that liberates or discharges something

release (verb)	discharge (verb)
generate and separate from cells or bodily fluids	eliminate (a substance)
eliminate (a substance)	become empty or void of its content
make (assets) available	pronounce not guilty of criminal charges
prepare and issue for public distribution or sale	release from military service
release, as from one's grip	cause to go off
let (something) fall or spill from a container	go off or discharge
release (gas or energy) as a result of a chemical reaction or physical decomposition	pour forth or release
part with a possession or right	remove the charge from
grant freedom to; free from confinement	remove (cargo, people, etc.) from and leave
make (information) available for publication	complete or carry out
	free from obligations or duties