As nouns the difference between postponement and stoppage
is that postponement is a delay, as a formal delay in a proceeding while stoppage is a pause or halt of some activity.
postponement
English
Noun
(postponements)
A delay, as a formal delay in a proceeding.
:The lawyer asked for a postponement in the trial so he could spend more time preparing before it began.
stoppage
English
Noun
(
en noun)
A pause or halt of some activity.
Something that forms an obstacle to continued activity, a blockage.