G4192–πόνος–ponos

for I do testify to him, that he hath much zeal for you, and those in Laodicea, and those in Hierapolis.

πόνον ponon “labour”

And the fifth messenger did pour out his vial upon the throne of the beast, and his kingdom did become darkened, and they were gnawing their tongues from the pain,

πόνου ponou “distress”

and they did speak evil of the God of the heaven, from their pains, and from their sores, and they did not reform from their works.

πόνων ponōn “distresses”

and God shall wipe away every tear from their eyes, and the death shall not be any more, nor sorrow, nor crying, nor shall there be any more pain, because the first things did go away.'

πόνος ponos “pain”