noun
debenture
dih-BEN-cher/dɪˈbentʃər/
A debt instrument backed by the issuer’s general credit rather than specific assets.
The company issues a debenture backed by its general credit.

Etymology
Keeping something away from someone underlies the idea of owing. Latin debentur, “there are owing,” is said to have opened debt certificates; their name developed into a term for a bond.
In context
basically we're talking about the 504 debenture
More examples
- This debenture pays interest twice a year.
- Investors review the issuer’s credit rating before buying its debentures.
- Unlike a secured bond, a debenture pledges no specific assets as collateral.
Forms
debenture · debentures