The first is another form for the second which is used as an alternate in certain tenses; probably a form of G4150 (through the idea of plunging through the water); to pass in a vessel: - sail. See also G4130.
Verse
Matrix
Joh 19:34But one of the soldiers with a spear pierced his sideG4125, and forthwith came there out blood and water.
Joh 20:25The other disciples therefore said unto him, We have seen the Lord. But he said unto them, Except I shall see in his hands the print of the nails, and put my finger into the print of the nails, and thrust my hand into his sideG4125, I will not believe.
Joh 20:27Then saith he to Thomas, Reach hither thy finger, and behold my hands; and reach hither thy hand, and thrust it into my sideG4125: and be not faithless, but believing.
Act 12:7And, behold, the angel of the Lord came upon him, and a light shined in the prison: and he smote Peter on the sideG4125, and raised him up, saying, Arise up quickly. And his chains fell off from his hands.