Question: Is money concrete or abstract?

Admit it, you spent 50 bucks on the newly legal cannabis in your state. Smoked it, then decided to type this post...I get it. I've been there. You are definitely a better grocery shopper when you have the munchies.....
p.s. My response is totally to deflect away from the issue because I too spent some bread on newly legalized pot in my state and am currently too blitzed to follow what you're asking...However, I do know you can buy concrete with paper money or bank account money.