The real wordsTheory
Treasury bills
Treasury bills (T-Bills)Short-term securities issued by the RBI on behalf of the Central Government. One of the two types of G-Sec, the other being dated government securities.
The features the slide lists: backed by the Government, so risk free and highly liquid; sold by auction; only the Centre issues them, never a State; and they carry no interest component, which is the biggest difference between T-bills and bonds.
Instead of a coupon, they are issued at a discount to their true (PAR) value and redeemed at par.