As a noun proviso
is a conditional provision to an agreement.
As an adjective provisory is
containing (a) proviso(es).
Other Comparisons: What's the difference?
A conditional provision to an agreement
containing (a) proviso(es)
:''The provisory clause effectively excluded his otherwise logical heirs from his main inheritance
dependent on a condition (proviso)
:''A provisory guarantee is rather like blackmail
pending something more permanent
* (relating to a proviso) conditional
* (pending something) provisional, temporary, transitory