desolation (Hebrew #7612)

Lamentations
3:47   Fear
pachad (Hebrew #6343)
a (sudden) alarm (properly, the object feared, by implication, the feeling)
KJV usage: dread(-ful), fear, (thing) great (fear, -ly feared), terror.
Pronounce: pakh'-ad
Origin: from 6342
and a snare
pachath (Hebrew #6354)
a pit, especially for catching animals
KJV usage: hole, pit, snare.
Pronounce: pakh'-ath
Origin: probably from an unused root apparently meaning to dig
is come upon us, desolation
she'th (Hebrew #7612)
devastation
KJV usage: desolation.
Pronounce: shayth
Origin: from 7582
and destruction
sheber (Hebrew #7667)
from 7665; a fracture, figuratively, ruin; specifically, a solution (of a dream)
KJV usage: affliction, breach, breaking, broken(-footed, -handed), bruise, crashing, destruction, hurt, interpretation, vexation.
Pronounce: sheh'-ber
Origin: or sheber {shay'-ber}
.