rationing vs allocation

rationing and allocation both are nouns.

Word	Noun	Adjective	Verb	Adverb
rationing	Yes	No	No	No
allocation	Yes	No	No	No

As nouns, allocation is a hypernym of rationing; that is, allocation is a word with a broader meaning than rationing:

rationing: the act of rationing
allocation: the act of distributing by allotting or apportioning; distribution according to a plan

Other hypernyms of rationing include allotment, apportioning, apportionment, assignation, parceling, parcelling.

rationing (noun)	allocation (noun)
the act of rationing	the act of distributing by allotting or apportioning; distribution according to a plan
	(computer science) the assignment of particular areas of a magnetic disk to particular data or instructions
	a share set aside for a specific purpose