What are bank notes in economics?

A banknote is a negotiable promissory note which one party can use to pay another party a specific amount of money. A banknote is payable to the bearer on demand, and the amount payable is apparent on the face of the note.

i mean, there is a lot of homeless people. but it is a very busy place and always in need for people who can be busy so it's not impossible to find one.

answer; microeconomics;