The photographer has acknowledged a/his 'debt' to Andy Warhol. [=the photographer has said that his work was influenced by the photographs made by Andy Warhol]
banks with millions of dollars of 'bad debt' [=banks that have loaned millions of dollars that will not be repaid]
She's finally paid off her mortgage 'debt'. [=the money that she owed the bank to pay for her house]
(..) You're hurt really bad. I'm just trying to help you. You're in my home now. I'm an engineer. My name is Cade Yeager. Cade, I am in your debt. My name is Optimus Prime. My Autobots. They're in danger. I need to go. I need to go now. How far you think you're gonna get? (..)2014 Transformers: Age of Extinction