Supersede
Etymology
From Latin “supersedere,” to sit above, from “super” (over) and “sedere,” to sit — its earliest English sense was to refrain from or desist. That “sitting above” hardened into the modern meaning of one thing overriding another. Note the spelling: it ends in “-sede,” not “-cede,” the only English word to do so.
verb · /soo-per-SEED/
To take the place of something older, rendering it obsolete or void.
What it names
Formal replacement — the new version that does not merely compete with the old but officially voids it.
Example
This agreement supersedes all prior contracts between the parties.
Related idea
To supersede is to void and replace; to relegate is to demote to a lower place while keeping it around. The superseded rule is dead; the relegated one just moves down.