Strong’s Greek
G2851 — kolasis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κόλασις
kolasis — pronounced kol'-as-is
from 2849; penal infliction:--punishment, torment. see GREEK for 2849
2 occurrences in the KJV.
Matthew 25:46
And these shall go away into everlasting punishment: but the righteous into life eternal.
1 John 4:18
There is no fear in love; but perfect love casteth out fear: because fear hath torment. He that feareth is not made perfect in love.