superannuation vs firing

superannuation and firing both are nouns.

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

As nouns, firing is a hypernym of superannuation; that is, firing is a word with a broader meaning than superannuation:

superannuation: the act of discharging someone because of age (especially to cause someone to retire from service on a pension)
firing: the termination of someone's employment (leaving them free to depart)

Other hypernyms of superannuation include discharge, dismissal, dismission, liberation, release, sack, sacking.

superannuation (noun)	firing (noun)
the act of discharging someone because of age (especially to cause someone to retire from service on a pension)	the act of setting something on fire
the property of being out of date and not current	the termination of someone's employment (leaving them free to depart)
a monthly payment made to someone who is retired from work	the act of discharging a gun
	the act of firing weapons or artillery at an enemy