As nouns the difference between fragger and flagger
is that fragger is (us|military|slang) one who frags (deliberately kills a superior officer with a fragmentation grenade) while flagger is one who directs traffic past a construction site using signs or flags.
fragger
English
Noun
(
en noun)
(US, military, slang) One who frags (deliberately kills a superior officer with a fragmentation grenade).
flagger
English
Noun
(
en noun)
One who directs traffic past a construction site using signs or flags.