allocate vs allocation

allocate is not a noun while allocation is a noun.

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

allocate (noun)	allocation (noun)
	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

allocate (verb)	allocation (verb)
distribute according to a plan or set apart for a special purpose