reimburse vs reimbursement

reimburse is not a noun while reimbursement is a noun.

Word	Noun	Adjective	Verb	Adverb
reimburse	No	No	Yes	No
reimbursement	Yes	No	No	No

reimburse (noun)	reimbursement (noun)
	compensation paid (to someone) for damages or losses or money already spent etc.

reimburse (verb)	reimbursement (verb)
pay back for some expense incurred
reimburse or compensate (someone), as for a loss