amortisation vs payment

amortisation and payment both are nouns.

Word	Noun	Adjective	Verb	Adverb
amortisation	Yes	No	No	No
payment	Yes	No	No	No

As nouns, payment is a hypernym of amortisation; that is, payment is a word with a broader meaning than amortisation:

amortisation: payment of an obligation in a series of installments or transfers
payment: the act of paying money

Other hypernyms of amortisation include defrayal, defrayment.

amortisation (noun)	payment (noun)
payment of an obligation in a series of installments or transfers	the act of paying money
the reduction of the value of an asset by prorating its cost over a period of years	an act of requiting; returning in kind
	a sum of money paid or a claim discharged