As verbs the difference between slagging and flagging
is that slagging is present participle of lang=en while flagging is present participle of flag.
As a noun flagging is
a pavement or sidewalk of flagstones; flagstones, collectively.
flagging
English
Verb
(head)
Noun
(
en noun)
A pavement or sidewalk of flagstones; flagstones, collectively.