payoff vs income

payoff and income both are nouns.

Word	Noun	Adjective	Verb	Adverb
payoff	Yes	No	No	No
income	Yes	No	No	No

As nouns, income is a hypernym of payoff; that is, income is a word with a broader meaning than payoff:

payoff: the income or profit arising from such transactions as the sale of land or other property
income: the financial gain (earned or unearned) accruing over a given period of time

payoff (noun)	income (noun)
a recompense for worthy acts or retribution for wrongdoing	the financial gain (earned or unearned) accruing over a given period of time
the final payment of a debt
payment made to a person in a position of trust to corrupt his judgment
the income or profit arising from such transactions as the sale of land or other property