upkeep vs reparation

upkeep and reparation both are nouns.

Word	Noun	Adjective	Verb	Adverb
upkeep	Yes	No	No	No
reparation	Yes	No	No	No

As nouns, reparation is a hypernym of upkeep; that is, reparation is a word with a broader meaning than upkeep:

Other hypernyms of upkeep include fix, fixing, fixture, mend, mending, repair.

upkeep (noun)	reparation (noun)
activity involved in maintaining something in good working order	something done or paid in expiation of a wrong
the act of sustaining life by food or providing a means of subsistence	the act of putting something in working order again
	(usually plural) compensation exacted from a defeated nation by the victors
	compensation (given or received) for an insult or injury