proceeds vs payback

proceeds and payback both are nouns.

Word	Noun	Adjective	Verb	Adverb
proceeds	Yes	No	No	No
payback	Yes	No	No	No

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

proceeds: the income or profit arising from such transactions as the sale of land or other property
payback: financial return or reward (especially returns equal to the initial investment)

Other hyponyms of proceeds include economic rent, rent.

proceeds (noun)	payback (noun)
the income or profit arising from such transactions as the sale of land or other property	the act of taking revenge (harming someone in retaliation for something harmful that they have done) especially in the next life
	financial return or reward (especially returns equal to the initial investment)