G4963–συστροφή–sustrophē

For we are in danger to be called in question for this day's uproar, there being no cause whereby we may give an account of this concourse.

συστροφῆς sustrophēs “commotion”

And when it was day, certain of the Jews banded together, and bound themselves under a curse, saying that they would neither eat nor drink till they had killed Paul.

συστροφὴν sustrophēn “a conspiracy”