Just to clarify what Tinny has so ably explained -
We need also to consider ASDA (Accelerate-Stop Distance Available).
TORA is the basis - the hard stuff your a/c can roll on with no restriction.
ASDA is TORA plus stopway (stuff your a/c can roll on during a RTO) The excess past TORA (stopway) may well be damaged by the a/c, but is used only in emergency.
TODA is not necessarily all stuff your a/c can roll on. TODA often exceeds TORA - it cannot be less. It includes stopway and may include clearway (an obstacle free plane over which an a/c may fly while making screen height). Clearway is often water.