payment vs ransom

payment and ransom both are nouns.

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

As nouns, ransom is a hyponym of payment; that is, ransom is a word with a more specific, narrower meaning than payment:

payment (noun)	ransom (noun)
the act of paying money	the act of freeing from captivity or punishment
an act of requiting; returning in kind	payment for the release of someone
a sum of money paid or a claim discharged	money demanded for the return of a captured person

payment (verb)	ransom (verb)
	exchange or buy back for money; under threat