Maturity
Maturity is the date on which a fixed-income instrument expires and pays out. In yield tokenization, maturity is when a Principal Token can be redeemed 1:1 for the underlying asset and a Yield Token stops accruing and expires worthless.
Maturity is the fixed end date of a position. Before it, prices float with the market; at it, a PT redeems for full principal and a YT reaches zero.